- Added TLS client certificate support via a proxy, with new options for browsers, API contexts, and projects, enhancing security and enabling server verification.
- Introduced a CLI flag to run only tests changed since the last Git commit/ref, an experimental router fixture for component testing, and multiple UI/Trace Viewer improvements such as inline attachments and source location copying.
- Added new apiRequestContext.fetch maxRetries, fixture boxing and custom titles, and documented a breaking change requiring array‑of‑object fixtures to be wrapped in a tuple.