According to someone I recently talked to that's in the know, SAS (Serial Attached SCSI) hardware is actually going to start becoming available to end users right around the first week of July.
Yes, it should have already been available by now, but as I understand, some of the SAS controller folks and some of the SAS peripheral folks have actually been the ones holding the show up. The SAS hard drive folks are generally waiting. What good is a SAS hard drive without a SAS controller? Then, some are going to need SAS expanders and SAS switches.
I believe the idea is that SAS will hit the marketplace more or less with a big SPLASH (no pun intended) in July, instead of a trickle slowly turning into a flood. We'll find out, soon.