Mozilla released the next regular and ESR versions of Firefox on Tuesday, May 12th with Firefox 38. New features in this version include:
- New tab-based preferences (Preferences panel is now its own tab)
- Ruby annotation support
Complete details can be found in the Firefox 38 Release Notes.
Depending on their update settings, users will be prompted to update within the next 24-48 hours. Users can also manually update by going to the Firefox Help Menu and selecting About Firefox and follow the prompts to update. Alternatively users can also down and manually install the update via getfirefox.com site.
The next planned release for Firefox is Firefox 39 and 38.1 ESR on June 30, 2015.