Disclaimer Adguard for Windows is not an open source project. We use github as an open bug tracker for users to see what developers are working on.
This beta doesn't feature any new additions or standout changes. Rather just a bunch of various fixes and improvements. Overall, though, they present a basis for a release candidate, which will come soon if nothing goes wrong with this beta.
Ad blocking
[Changed] List of Stealth Mode settings enabled by default #1197
[Improved] Changed $empty modifier behavior #1184
[Improved] Added support for the :style pseudo class syntax #1186
UI
[Added] Hebrew localization #1076
[Added] "Versions history" link on the "About" screen #1185
[Fixed] Extra dialog window pops up when you select 'Debug' logging level #1205
Networking
[Changed] SHA-1 deprecation rules are not being used on Windows XP anymore #1115
[Changed] Browser cache suppressing algorithm on filters change #1190
[Fixed] Router page loading indefinitely #1042
[Fixed] Adguard misinterprets greasemonkey/tampermonkey update checks #1202
[Improved] "Do not filter websites with EV certificates" feature #712
Minor
[Changed] Facebook and Facebook Messenger UWP apps excluded from filtering #1195
[Changed] HAL app added to the list of filtered by default #779
[Fixed] An empty 'C:\Performix LLC' folder is created #646
[Fixed] Adguard update error #1053