With Windows 7 scheduled for general availability in about a week, Mozilla is getting ready to support some of its best known features as they progressively come to Firefox 3.6 nightly development releases.
First, tabs can now be previewed from the task bar directly just hovering over the Firefox icon (Namoroka’s in the screenshot). Previews for all windows are displayed at a time, and like other Windows 7 applications you can select or close a tab from there.
Second, support for jump lists: right click on the Firefox task bar icon to get quick access to the most frequently visited sites, create a new tab or window or close Firefox. This features is not yet available in Namoroka, but the trunk (the source for future Firefox versions). It will most likely land after the Beta 1 freeze.
Finally, we should be able to check download status directly from the task bar thanks to a progress bar integrated with the Firefox icon. A green progress bar indicates downloads are currently in progress while a yellow one menas downloads are currently paused. This one hasn’t been landed yet on either source repository.