I have never understood this bitterness of Leica "enthusiasts" ... No one forced you to buy your M. If you were so offended by the price, why the heck did you buy it?
As I look at the specs for this camera, they increased the internal buffer size, added the (very expensive) sapphire LCD cover, and did some other incremental changes to improve the camera's responsiveness. It's not a whole lot, but things like that LCD cover are premium cost items that add to the price. I haven't seen one in the flesh, of course, the "bolt" is probably more noisome in the photographs than it is in person ... I kinda like it more than the slightly oversize red dot, but neither bugs me one way or the other. If I really didn't like it, I'd stick a piece of tape over it.
I'm pretty darn happy with the equipment I've got already. I think the improvements over the M are actually worth it, and certainly the improvements (particularly to camera responsiveness) are a major step up from the M9.
No decisions for the moment. No need to rush. Next year will be soon enough for anything .. I have way more equipment than I need already. ;-)
G