If you have been waiting for BizTalk Server 2013 R2, the wait is over. Although this is not a huge new release, if the new features are of interest to you then it is available for download from MSDN as of today. It has a huge long ugly url which I shortened to help you all out. We haven’t seen the specific numbers but the buzz is that performance is greatly enhanced especially for EDI specifically HL7 scenarios.
http://tinyurl.com/BTS2013R2Download to download the bits, (with an MSDN license of course).
http://tinyurl.com/BTS2013Features for a comparative list of features between BTS 2013 and BTS 2013 R2.
Happy BizTalking!