Alpaca maintains 4 SDKs in Python, TypeScript/JS, C#/.NET, and Go where we ship the latest functionality for Alpaca APIs. Live crypto orderbook data is available in this release of the SDKs. You can install the Alpaca Trade SDK using one of the following language specific CLI commands. The new features include live streaming of crypto orderbook data through the Stream class using subscribe_crypto_orderbooks, and improvements such as filtering by side when listing orders. Additionally, new features have been added to other languages including support for corporate actions retrieval APIs, historical bar time frames, and multi-symbols requests. Improvements have also been made to address connectivity issues with data streaming and fractional order quantity validation.