Pob255
Umm USB 3.0 is frist quarter 2010 so you've got about 6months to wait
http://www.digitimes.com/news/a20090415PB204.html
Date on the next generation of Sata is unknown
So you could be here a while.
Sata 6G is stumbling at the blocks at the moment, it was ready to roll unfortunately there where some issues with IDE/Floppy compatibility and for some baffling reason they dropped the 6G support…. Personally I would have ditched IDE/Floppy support (at least on one high end / low legacy support board). I haven't had a floppy in my pc in about 3 years (or used one in about 5) and I replaced my ide dvd-rw with a sata one last year when my ide one packed up, and it was actually 13p cheaper. So neither is really needed anymore.
I thought that USB 3.0 was due to hit boards in Q4 this year, but if its Q1 next year or even Q2 I will wait…
After all my Core Duo 6600 is still burbling along quite happily and whilst I do fancy a faster PC I don't actually need one just yet. I would rather wait and not waste ~£100 on a MB that won't support these techs. (Never mind the fact that when a board does come out supporting both techs I will more than likely be able to get a faster/cheaper cpu, faster/more memory and have a better system for the cash.