On August 1st, 2025, support for microVM-backed custom runtimes will be disabled, and users are advised to transition to V8-based runtime engines, which offer faster startup and build times along with easier self-hosting capabilities. Starting July 2nd, 2025, new custom runtimes will default to the V8 engine, and after August 1st, the creation and usage of microVM runtimes will be restricted except for those in a transition program. A migration guide is available to assist users in reviewing dependencies, creating new V8 runtimes, testing applications, and updating API calls. The company acknowledges the potential disruption caused by this change and offers support through Discord or email to ensure a smooth transition.