was released on (or about) 18 May 2011. It is now an OFFICIALLY-SUPPORTED Microsoft product, having an online forum at http://social.technet.microsoft.com/Forums/en/emet/threads
Other changes include (http://blogs.technet.com/b/srd/archive/2011/05/18/new-version-of-emet-is-now-available.aspx
“Bottom-up Rand” new mitigation randomizes (8 bits of entropy) the base address of bottom-up allocations (including heaps, stacks, and other memory allocations) once EMET has enabled this mitigation.
Export Address Filtering is now available for 64 bit processes. EAF filters all accesses to the Export Address Table which blocks most of the existing shellcodes
Improved command line support for enterprise deployment and configuration
Ability to export/import EMET settings
Improved SEHOP (structured exception handler overwrite protection) mitigation
Minor bug fixes
I have been using EMET 2.0.x for quite a while now, and have not noticed any problems with it. I updated to version 2.1 yesterday, and so am still "playing" with it....