usb 3 ??

recent messages here have noted problems with usb
most fixable with new cable or not using a breakout hub

anybody got any info on how usb 3 is going to work out ?
the high speed is touted in the ads
some pcs are starting to use it

should we expect early gotchas like noise or buffering problems?

will hard disks be able to keep up with that data rate ?

anybody tried using this new usb yet to have any experience?
any speculation ?