At least with the default theme (Twilight) composing a new message opens a new tab. I've only done a little testing with 6.0 so I'm not sure where else tabs appear.
As far as zimlets, there is a tab for them under preferences, but it looks like it only has the basic zimlets. Haven't done any searching around yet, but it seems like it may still require the manual zimlet install described in the Wiki. |