^{Reminder: Chromium (or browsers based on) still suffer from that ugly bug which causes a big chunk of memory leak each time a user opens the popup UI of an extension. Therefore, the more you use the popup UI in Chromium, the larger the memory footprint of µBlock (or any extension really) will grow. I've already seen feedback like "doesn't have a µ memory footprint at all for me. >250MB" (for µMatrix). This is important to keep this Chromium memory leak bug in mind if you make use of dynamic filtering, as this feature requires frequent access to the popup UI.}

New

• Firefox for mobile (Fennec) support
  • You can thank @AlexVallat, @chengsun, @Deathamns for making this happen
• New translations available: Lithuanian (complete), Slovenian (partial), Serbian (Cyrillic) (partial), Telugu (partial)
• Chinese translation of README + many wiki pages
• Korean translation of README

Closed as fixed:

Chromium

• Dashboard will not come to front, if it was already opened earlier

Fennec

• UI for Fennec (Firefox for Android)
• Please support Firefox for Android

Firefox

• No element hiding upon start
  • Although uBlock's start-up time is relatively fast, there is just no way to guarantee that it will be up and ready to filter content before existing tabs are loaded. The fix ensure pages loaded before uBlock was ready are cleaned up.
• Image fails to load on github, when page is reloaded after whitelisting image cell

Safari

• Enable creating backups to work.
• Does not restore properly from a backup created in Firefox, works fine in Firefox/Chrome.
• Storage below quota as requested by uBlock; now uses proper storage API.

Core

• "Open Link in New Tab" gets blocked in Behind the Scene with "* * * block"
  • The issue manifested on Fennec, but the required fix was really in core code
• No indication of purging when clicking on the "Purge all caches" button
• Double clicking to select word in "My rules" resets changes made
• Global blocking stats lost when restoring/resetting settings
• abp:subscribe, new automated import of ABP filters leads to undefined description
• Schedule manually updating filter lists less aggressively to give time for garbage collection
• Custom cosmetic filter fails to apply
• 3rd-party filter list update: show status/progress indications in UI
• How to whitelist embedded tweets?
• Add "updated on %date" text to each filter list