So now everyone gets to play...!
Announcement is here.
Download it from here (you'll need to register for Microsoft Connect and/or sign in - but it's free to register).
If you download everything, it's a 558MB download.

This the Beta2 version.

So download it, and go play with all the WCF goodness...

What's new in R2?

• Better EDI (Electronic Data Exchange) and AS2 (Applicability Statement 2) support
• Support for RFID (Radio-Frequency Identification)
  
• New WCF Adapters
• Better SharePoint integration
• Supported under Vista (i.e it'll work without hacking it!)
• Better integration with Office 2007

I'll have a play with this new Beta and blog about my findings soon.