Version 36.0, first offered to Release channel users on February 24, 2015

What's New:

New - Pinned tiles on the new tab page can be synced
New - Support for the full HTTP/2 protocol. HTTP/2 enables a faster, more scalable, and more responsive web.
New - Locale added: Uzbek (uz)
Changed - remote option removed
Changed - No longer accept insecure RC4 ciphers whenever possible
Changed - Phasing out Certificates with 1024-bit RSA Keys
Changed - Shut down hangs will now show the crash reporter before exiting the program
Changed - Add-on Compatibility
Fixed - CSS gradients work on premultiplied colors
Fixed - Fix some unexpected logout from Facebook or Google after restart
Fixed - Various security fixes

Known Issues:

UNRESOLVED - Style Editor: Extra white space appearing above the editor for a sourcemapped scss file (1128747)

Release Notes continued: https://www.mozilla.org/en-US/firefox/36.0/releasenotes/

Downloads:
http://www.mozilla.org/en-US/firefox/new/

Fully Localized Versions:
http://www.mozilla.org/en-US/firefox/all.html