Firefox 13 was released on 06/05/2012
Firefox Notes - Desktop
Firefox Has a Redesigned Home Page and New Tab Experience That Make Browsing the Web Faster and Easier | The Mozilla Blog
Thunderbird 13 was released on 06/05/2012
Thunderbird Release Notes
New Thunderbird release: Simplify your email experience! | The Mozilla Thunderbird Blog
SeaMonkey 2.10 was released on 06/06/2012
Hope they show up in the updates repository soon.