Mozilla Wiki has revealed that the developers behind Firefox and Thunderbird are scheduled to release the latest stable builds of Firefox and Thunderbird on January 31.
This means that Mozilla Firefox 10 and Thunderbird 10 would be out later this month.
Firefox would join Opera and Chrome in the dual digit versioning with this update! Internet Explorer is also expected to get version 10 sometime later this year.
The wiki further said that Firefox 11 and Thunderbird 11 would enter beta testing phase on the same day. Firefox 12 and Thunderbird 12 would enter aurora channel.