The official announcement is over at

MSDN Forums Commerce 2007 SP2 Announcement.

Here are the links for you if you'd like to download it.

Commerce Server 2007 Service Pack 2 – Standard Edition

Commerce Server 2007 Service Pack 2 – Enterprise Edition

Commerce Server 2007 SP2 Partner SDK

Commerce Server 2007 Starter Site Release 2

Commerce Server 2007 Service Pack 2 Documentation Refresh

The MSDN Forums article has more information about what's new.

My laptop now runs Windows Server 2008 and Hyper-V RC1 so I'll be setting up a couple of Virtual Machines with this.

I'm also really looking forward to using it with IIS 7 in Integrated Pipeline Mode.

Max Akbar also talks about this release here.