OCS 2007 R2 is RTM now !

Microsoft Office Communication Server 2005 R2 has a lot of improvements included.

More Details about the features you can find here

Evaluation and Tools can be downloaded at :

Here the other download links

Object

FWLink

OCS 2007 R2 Eval

http://www.microsoft.com/downloads/info.aspx?na=45&p=1&SrcDisplayLang=en&SrcCategoryId=&SrcFamilyId=3d619c8c-6540-4f2d-b78e-5b4c25780adb&u=details.aspx%3ffamilyid%3d67A3DE72-7DBD-4E0B-92A5-29D0B46009A7%26displaylang%3den

OC 2007 R2 Eval

http://www.microsoft.com/downloads/info.aspx?na=45&p=2&SrcDisplayLang=en&SrcCategoryId=&SrcFamilyId=3d619c8c-6540-4f2d-b78e-5b4c25780adb&u=details.aspx%3ffamilyid%3d535637AF-D92F-41B1-BF0C-54A526A88247%26displaylang%3den

Office Communications Server 2007 R2 Attendant

http://go.microsoft.com/fwlink/?LinkId=141218

Office Communications  Server 2007 R2 Group Chat Client

http://go.microsoft.com/fwlink/?LinkId=141220

Office Communications Server 2007 R2, Group Chat Server

http://go.microsoft.com/fwlink/?LinkId=141219

Microsoft Office Communications Server 2007 R2 Group Chat Administration Tool

http://go.microsoft.com/fwlink/?LinkId=141221

Office Communicator Phone Edition

http://go.microsoft.com/fwlink/?LinkId=141222

CoMo – MSI – Pocket PC

http://go.microsoft.com/fwlink/?LinkId=141380

CoMo – MSI – Smartphone

http://go.microsoft.com/fwlink/?LinkId=141381

CoMo – OTA – Pocket PC

http://go.microsoft.com/fwlink/?LinkId=141382

CoMo – OTA – Smartphone

http://go.microsoft.com/fwlink/?LinkId=141383

UCMA 2.0 SDK – 32 bit

http://go.microsoft.com/fwlink/?LinkID=140790

UCMA 2.0 SDK – 64 bit

http://go.microsoft.com/fwlink/?LinkID=139195

Speech Language Packs (12 langs)

http://go.microsoft.com/fwlink/?LinkID=139197

Office Communications Server 2007 R2 Planning Tool

http://go.microsoft.com/fwlink/?LinkId=141223

Office Communications Server 2007 R2 Resource Kit Tools – 64 bit

http://go.microsoft.com/fwlink/?LinkId=141224

Office Communications Server 2007 R2 SDK

http://go.microsoft.com/fwlink/?LinkId=141225