Sadly, given Microstuff's track record, i doubt the RTM will be much different than the consumer preview. Sure...they may tweak it here and there but in the end same ole bleh!
One would hope MS tweaks it enough to make the standard desktop the default UI on PC editions, with Metro as an alternate for the handful of people who like it. However, it is doubtful and I won't hold my breath that MS is watching the negative towards Win 8 threads plastered all over the internet.
The other thought one would hope MS has, and that is towards its hardware manufacturing partners/RTM's. If Win 8 is a dead set flop, which it seems likely to be given all the negative feedback to date, then all those PC's with Win 8 pre-installed will largely remain on the shelf, thus risking profits and jobs right across the industry.
There may be some sales from those who have no choice but to update their hardware, but me thinks it will be much like in the days of Vista, when users promptly had XP installed on the machine as soon as they got home. In this case, those users will revert back to Win 7 and wait for an improved Win 9 -10 or 11... without Metro, or they'll switch to a Mac or Linux. In any event, I can bet the other developers [Apple - Linux] are rubbing their hands with glee over this Metro disaster.