This is actually what's commonly referred to by Microsoft as an "update rollup". The term "driver rolling patch" is proof that it was written by someone who doesn't speak English, and the description was equally poorly written. I had the same qualms about the A12 ROM update. Dell is a big company, surely they can assign ONE English speaking person to proofread their publicly released software!
It contains the wifi update that was released in October, a switcherbar program update, CF driver update (same as included in A12?), and a mic update.
http://support.dell.com/support/down...&fileid=190050
I installed it but don't see a diffreence yet. Thanks for bringing it to our attention though kellyt!