The Alpaca platform has introduced two new features: Cancel All Orders through API and Liquidate Positions through API. The former allows users to cancel all open orders through an API call, while the latter enables users to liquidate their positions through the API, which was previously only accessible through the web dashboard. Additionally, Alpaca has launched a web forum for user discussion and engagement, and has made infrastructure updates to improve service reliability and availability. The platform is also introducing margin call protections to prevent day trade buying power (DTBP) margin calls. These changes aim to enhance the overall experience on the platform and provide users with more control over their trading activities.