Seems like 10 rear, 2 front is the new 9 rear, 3 front. If you know what I mean? I wish they'd quit it and just get a tiny, lightweight, in-BB gearbox going instead.

According to this, both SRAM and Shimano are going that way.

From:

http://www.singletracks.com/blog/mtb-news/mtb-ne...

This was mentioned back in Nov last year, but didn't see it before:

http://www.cyclingnews.com/tech.php?id=/tech/200...

Cue SS mumblings...