This is the new Shimano SLX 2013 that was unveiled in March 2012 and would be appearing in May and June 2012.
The crank copies the design from last year's XT and it looks good too.
So for those who want to upgrade to SLX do hold on for a while as the latest model is hitting the bike shops soon. You can visit the link below to read more.
http://bikemagic.com/news/shimano-unveil-2013-slx-groupset.html
http://singletrackworld.com/2012/03/shimano-2013-new-slx/
