- Removed several deprecated APIs and classes (e.g., ChromeOptions.setExperimentalOptions, FirefoxProfile.setProxyPreferences, .NET Android driver, old Selenium RC emulation) and cleaned up related visibility.
- Added new features such as httpOnly cookie flag support across languages, implementation of switch‑to‑parent‑frame command in all drivers, and ITakesScreenshot in the RemoteWebDriver base class.
- Implemented numerous bug fixes and build improvements, including Java build fixes, .NET documentation updates, service argument handling, Jetty thread configuration, and timeout/cleanup handling.