BIOS A08 popped up on Dells driver site, grab it here: Drivers and Downloads | Dell [united States]
No change log included... damn it, seriously.
Any noticeable changes? Let us know.
If you can't download from Dell, grab the attachement.
EDIT: Note that you might not be able to easily downgrade to a version which predates A08.
EDIT 2: A09 is not on the Dell site, but file is nowhere to be found... weird. You might want to hold off with updating until they release A09.
M14x_R2 - BIOS A08.zip