Your source for the latest features, improvements, and fixes across LocalStack products, all in one place.
LocalStack for Snowflake now follows the Docker image tag policy used by the wider LocalStack release process.
latest now mirrors stable and is pushed only from tagged releases such as 2026.05.0.dev tracks untagged changes from the main branch, and nightly tracks the scheduled nightly build.localstack/snowflake:latest to follow development builds, switch to dev or nightly.Several fixes reduce cases where valid Snowflake SQL failed locally due to type coercion or PostgreSQL behavior leaking through the emulation layer.
TRY_CAST(<array> AS ARRAY) returns the array value instead of rejecting ARRAY as a target type.MIN and MAX preserve typed NUMBER(p,s) values so decimal aggregates no longer round-trip through floating-point.ARRAY_AGG(DISTINCT ...) works with variant path expressions like f.value:"key"::STRING.COUNT(DISTINCT CASE WHEN ... THEN ... END) preserves literals inside nested CASE predicates.LAG and LEAD preserve qualified column references in ORDER BY, so joins with duplicated column names no longer raise false ambiguity errors.ILIKE and LIKE work more reliably on values coming from LATERAL FLATTEN.QUALIFY queries combining SELECT * with aliased expressions inside a CTE no longer create duplicate projected columns.UNION and UNION ALL coerce aliased NULL values through CTEs without requiring explicit casts.BEGIN ... END block are no longer prefixed with an invalid SELECT during translation.GROUP BY projections and other compilation failures return Snowflake-style errors instead of raw PostgreSQL error shapes.COPY INTO work per pipe instead of running it on the SQS polling thread, so different pipes load files concurrently.The Batch provider now runs Multi-Node Parallel (MNP) jobs that span multiple coordinated nodes, with one main node that workers connect to over the private network.
MainNode/numNodes overrides, per-node environment variables, per-node log streams, and termination propagation across child nodes.awsvpc network mode now report the container private IPv4 address in networkInterfaces[].privateIpv4Address on DescribeTasks; bridge and host mode tasks return an empty interface list.Self-managed EC2 nodes can join an emulated EKS cluster on the AL2023 AMI family, with Karpenter autoscaling as an early use case.
application/node.eks.aws NodeConfig in their user data join the matching EKS cluster, with support for the clusterDNS, maxPods, evictionHard, registerWithTaints, and nodeLabels fields.DescribeImages and the standard SSM Parameter Store paths.CreateFleet instances launched from a launch template now carry the template security groups, resolve $Latest/$Default version aliases, and apply fleet system tags; RunInstances assigns the default VPC security group when none is specified.AWS::DynamoDB::Table replication covers tables with Global Secondary Indexes and KMS-managed encryption.AWS::RDS::DBCluster is now replicable.The base Docker image moved to Debian sid to pick up upstream fixes for OS-level vulnerabilities that Debian trixie classifies as wontfix.
ALTER DATABASE <dbname> REFRESH COLLATION VERSION; and ALTER COLLATION pg_catalog.default REFRESH VERSION; after upgrading, and REINDEX any text-based indexes on persisted data.Several cases where LocalStack was stricter than AWS and rejected valid requests with AccessDenied under ENFORCE_IAM=1 have been fixed.
CopyObject checks s3:GetObject against the source object in CopySource, no longer requires s3:ListBucket or s3:PutObjectAcl, and requires s3:PutObjectTagging only with TaggingDirective=REPLACE.rds:AddTagsToResource only when a Tags parameter is passed.AWS::Kinesis::ResourcePolicy and Cloud Control Read/List for API Gateway V2 and RDS resource types; AWS::S3::Bucket supports Cloud Control Read covering ACLs, encryption, lifecycle, replication, versioning, and CORS.RUNNING and deregisters targets when a task transitions to STOPPED or FAILED.CREATE TABLE, INSERT, and SELECT (including CTAS) against s3tablescatalog/<bucket> federated catalogs.ruby4.0) is now available, and Batch job definitions honor containerProperties.secrets from Secrets Manager and SSM Parameter Store.The Snowflake emulator now supports catalog integrations that use the AWS Glue Iceberg REST endpoint, so you can test Snowflake Iceberg tables backed by Glue and S3 Tables locally.
CREATE CATALOG INTEGRATION accepts Glue REST options including CATALOG_API_TYPE = AWS_GLUE, WAREHOUSE, and REST_AUTHENTICATION with TYPE = AWS_SIGV4.CREATE ICEBERG TABLE can reference an existing table in the remote catalog via CATALOG_TABLE_NAME.DATE, TIME, and TIMESTAMP values more clearly.DAY, DAYOFMONTH, DAYOFYEAR, QUARTER, WEEK, and YEAROFWEEK for extracting parts from a date or timestamp.TIMESTAMP_LTZ_FROM_PARTS supports the six-argument form (year, month, day, hour, minute, second), with nanoseconds defaulting to 0.DATE_PART and EXTRACT now handle unquoted date/time parts such as DATE_PART(year, date_col) and EXTRACT(year FROM date_col).INFORMATION_SCHEMA.PROCEDURES is supported via the metadata FDW mechanism and returns user-created procedures with columns like ARGUMENT_SIGNATURE, DATA_TYPE, PROCEDURE_LANGUAGE, and PROCEDURE_DEFINITION.IDENTIFIER($var).INFORMATION_SCHEMA.TABLES gains ROW_COUNT and BYTES, returning NULL for views to match Snowflake.SHOW OBJECTS returns row and byte counts, adds the is_interactive column, and supports scoped filters such as SHOW OBJECTS IN <database>.<schema> STARTS WITH '<prefix>' LIMIT <n>.COPY INTO queries.LocalStack for AWS 2026.04.0 launches App Inspector, an observability layer that monitors your locally emulated AWS environment to surface misconfigurations, runtime errors, and missing permissions.
Athena, Glue, and S3 Tables are wired together so S3 Tables data can be queried from Athena via Glue federated catalogs, matching the AWS s3tablescatalog pattern.
CreateCatalog, GetCatalog, GetCatalogs, DeleteCatalog) and an Iceberg REST endpoint at /iceberg/v1/catalogs/....GetDatabase, GetTable, CreateDatabase, and CreateTable act on S3 Tables when the catalog ID matches s3tablescatalog.s3tablescatalog/<bucket>.bigdata container is upgraded from 440 to 480 (Java 25).Custom resource types uploaded via RegisterType are now executed end-to-end instead of only supporting CRUD and mock operations.
RESOURCE extension type is executable in this release.sslmode=require. Note pg_stat_ssl reports ssl=false even though the connection is encrypted.AWS::Organizations::OrganizationalUnit CloudFormation resource provider with full CRUDL support, including via Cloud Control.Update support for AWS::ECS::Service and AWS::KMS::Key.UpdateDataCatalog, GetTableMetadata, and ListTableMetadata, and bumps the default workgroup engine from v2 to v3.$LOCALSTACK_HOST in no_proxy for Lambda runtimes.PROVIDER_OVERRIDE_EVENTS reference from your configuration.engine-legacy) and the CloudWatch v1 provider now log a boot-time deprecation warning and are planned for removal in 2026.05.GET_DDL is now supported across the most commonly used object types, making schema introspection and migration tooling much easier to build locally.Enhanced Web App UX
We've polished the in-product web app with a refreshed UX to make local Snowflake development feel as smooth as production.
LocalStack for Snowflake adopts the new YYYY.MM.patch calendar versioning scheme alongside LocalStack for AWS. Your existing pinned versions continue to work, but new releases will follow the calendar cadence.
localstack/localstack and localstack/localstack-pro DockerHub images are now identical. The services available to you are now dynamically determined by your auth token entitlements.LOCALSTACK_ACKNOWLEDGE_ACCOUNT_REQUIREMENT=1 is available until April 6, 2026.Introducing lstk
We're shipping the first release of lstk, a brand-new LocalStack CLI rebuilt to simplify auth, install, and day-to-day workflows.
CreateFleet and DeleteFleets now spin up real containers/pods instead of returning mocked responses, with support for On-Demand, Spot, and mixed fleets.TestState now supports Parallel state with mocked results and correctly interpolates variables across JSONata-based states.v4.0.x and v4.1.x, and can run Kafka inside a Docker container instead of pulling artifacts from apache.org.LocalStack 4.14 introduces a brand-new provider for the AWS Resource Groups Tagging API (RGTA), giving you a unified way to discover and manage tagged resources locally.
GetResources.Snowflake Scripting gets closer to full parity, letting you exercise procedural logic locally with confidence.
IF-ELSEIF-ELSE conditional clauses with nested expressions and multi-statement branches.EXCEPTION WHEN OTHER THEN and access to SQLERRM/SQLSTATE.information_schema.columns for column metadata introspection.information_schema.schemata for schema-level discovery.information_schema.databases for account-wide database metadata.DISTINCT, and LIKE/ILIKE operators.LocalStack for AWS 4.13 adds support for the .NET 10 Lambda runtime, keeping local development in lock-step with the latest AWS-managed runtimes.
Snowflake 1.6 expands Iceberg support so external catalog workflows feel native to LocalStack.
CATALOG_TABLE_NAME.SELECT statements behave more like Snowflake.GET/PUT flows and numeric casting for large values are more faithful.No releases match the selected filter.
