- Removed several deprecated driver initialization arguments (service args, log path, log file/level, implementation, port) and the legacy Selenium::WebDriver::Remote::W3CCapabilities class.
- Fixed bugs including stray print statements in tests, binary file handling, asynchronous external process output to avoid deadlocks, null Chrome binary injection, propagation of grid‑specific or null capabilities, IE window spec handling...
- Updated changelog and documentation for the 3.8.1 release and bumped Java bindings to version 3.8.1.