Mozilla Firefox 4 has updated to beta 4

Last night I left the browser open and it updated itself from beta 3 to beta 4, an automated feature introduced since beta 2. At the first sight, the change is the tab-bar moved up

Furthermore, a new button has appeared on the far right-hand side of the tab-bar giving the chance to re-organise your tabs

Firefox sync is now included by default, the number of supported languages has increased, and it still loads itself in a reasonable time, though Google Chrome seems to be a bit quicker.

Full changelist from beta 3 is here.