dưới đây là relase note:
v4.0.0.0-alpha-1
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* Many deprecated methods and classes deleted.
* Alpha version of new Grid Server, supports "standalone", "hub",
"node", and completely distributed usage.
* Basic support for using Docker containers with the new Grid Server.
* Basic support for CDP landed via the "DevTools" interface.
* Basic support for OpenTracing landed. Use the "--ext" flag to the
new Grid Server to provide the classpath to an OpenTracing
implementation.
* Added support for WebSockets to the HttpClient
* Location of safari driver now configurable using
"webdriver.safari.driver" system property.
* #6649: Legacy firefox driver respects "webdriver.firefox.logfile"
system property.
* Added command to open a new window.
* Element screenshotting now possible
* Selenium Server now no longer includes HtmlUnit by default
* New Grid can output logs in single-line json format to stdout
* #6617 Implement equals() and hashCode() in `Select` element wrapper