Since no boards with the ATmega168 have been shipped out, this shouldn’t affect anyone, but if you happened to build your own board in the last few days and used firmware 1.1b for it – you’ll want to update it to 1.2b found here.

The ATmega168 appears to access its flash memory at a different speed (perhaps due to increased size), which slowed down macro playback to a noticeable degree. This firmware updates the playback speed to put it back in line with the ATmega8.

Again, this firmware is only for the ATmega168, so if you bought your board, you won’t need this firmware.