Late last night I saw some tweets about the new version of BizTalk getting to beta status. A quick look, and sure enough, BizTalk 2010R2 is renamed to BizTalk 2013 and a beta version is available for download.
I must say that this release is very intriguing. Among the more interesting new features for me is the REST capabilities, the new SharePoint adapter and the ESB toolkit integration (especially since I loathe the way the first version was to be setup and handled).
The new dependency function to check out how artifacts are dependent of eachother is also a nice addition.
Go check it out and hope for a quick release of the final product!