Firebolt continuously releases updates so that you can benefit from the latest and most stable service. These updates might happen daily, but we aggregate release notes to cover a longer time period for easier reference. The most recent release notes from the latest version are below.
Firebolt might roll out releases in phases. New features and changes may not yet be available to all accounts on the release date shown.

​
Firebolt Release Notes - Version 4.25

​
New Features

Improved type inference in the READ_CSV() function READ_CSV() function enhances data handling by detecting and assigning specific data types such as BIGINT, DOUBLE PRECISION, and BOOLEAN to CSV columns. Previously, the function returned all columns as TEXT. The INFER_SCHEMA parameter manages this behavior and is true by default, ensuring better data type detection. Set it to false to treat all types as TEXT. This improvement allows users to manage and analyze data more effectively, aligning data types with their actual content. Added release channel information to the engines table accessible via SHOW ENGINES or information_schema.engines view The engines table now includes release channel information. Users can retrieve this data by using the SHOW ENGINES query or by querying information_schema.engines. This addition helps users easily access and manage engine release details. To display all engines with the release channel column included, use the following command: 
SHOW ENGINES;
To find the release channel of a specific engine, use the following query: 
SELECT release_channel FROM information_schema.engines WHERE engine_name = 'myengine';
Added a PARTITION_ID field to VACUUM_JOB telemetry The VACUUM_JOB telemetry now includes a PARTITION_ID field. This addition helps users better analyze and monitor partition-specific vacuum activities. Documentation is available here. This enhancement provides users with better visibility and control over their engine configurations, promoting efficient management and planning.

​
Performance Improvements

Improved predicate pushdown support Added an optimizer rule that pushes Filter predicates down through Window operators when safe to do so. Enhanced the VACUUM process by merging tablets from different nodes into a single tablet The VACUUM process now merges tablets from different nodes into a single tablet. This improvement enhances storage efficiency and optimizes performance in managing data across nodes. After the deployment of 4.25, we will migrate engines in the COMPUTE_OPTIMIZED (CO) family from AMD architecture to ARM We expect this to provide a general performance improvement. Users can temporarily opt out by changing their CO engine to use an AMD-specific engine type.