Head's up --
Mozilla has now released
Firefox v21.0 -- it's now ready on your browser's updater, and at the main publisher's site (
offline installer ) and your favorite downloading hubs
Release notes for this version has been documented, courtesy of GHacks
Reference source --
Firefox 21.0: Find out what is new -
Other updates include:
Adobe has also released the new
Flash Player v11.7.700.202 (
for IE and Non-IE browsers ) -- these are ready to download at the publisher's site ( both online and offline installers ) and other downloading hubs
And for those that need this --
Adobe has also released
AIR v3.7.0.1860 -- also ready to download at the publisher's site ( online and offline installers
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Edit: Adding the official Release Notes from Mozilla in regards to Firefox v21.0
Reference Source --
Firefox Notes - Desktop