Pin tab is a cool feature of Google Chrome, it saves space on the tab bar and prevents you from accidently closing it… The mock-ups of Firefox 4 suggested the same feature coming to Firefox too. The first beta of Firefox 4 did have a new refreshed theme but it didn’t have the “App tab” feature – yes that is what Mozilla is calling the pin tab feature. This App tab feature has shown up in the latest nightly built of Firefox 4. You can download it here. To create an App Tab, just right click and select the option from the context menu.
Mac users did not get the fully refreshed UI of Firefox 4 in beta 1. The second beta of Firefox would hopefully be released by July 22 and it would give Mac users the much needed UI refresh.
check out the video below -
