2025 Q1 Updates and Changes

Meltano 3.7.0 and 3.7.1 add relative date support in plugin configuration, along with other enhancements.

Meltano

We've released versions 3.7.0 and 3.7.1 of Meltano!

These releases include, among other things, the following changes:

Relative dates are now supported in plugin configuration, making it easier to configure date-based settings with values like last week or yesterday.
Custom state backends can now be created as plugins, opening up possibilities for enterprise-grade state management solutions beyond the built-in options.
The UV virtual environment backend is no longer experimental and will become the default in a future release. Users can migrate now with meltano config meltano set venv.backend uv.
Improved logging capabilities including a new --log-format CLI option and automatic logging configuration for Singer-based plugins.
The project environment variables are now passed to the installation environment, improving plugin installation flexibility.
Switched from Poetry to UV for faster dependency management and improved developer experience.

We shipped 2 minor releases of the SDK:

Among other things, these releases shipped the following changes:

Experimental msgspec-based IO interfaces for significantly improved performance in message processing.
The low-level Singer library is now publicly available as singer_sdk.singerlib, giving developers direct access to Singer protocol implementations.
Full support for the x-singer.decimal JSON Schema extension, preventing precision loss for financial and scientific data.
Deprecation support for stream schemas and settings fields, enabling smoother API evolution.
Custom SQL type handling with the new x-sql-datatype JSON Schema annotation for targets.
SHA256 encryption method added to inline stream maps for enhanced data security.