June 2011, the new version of MARTE has been released by OMG. It can be downloaded from http://www.omg.org/spec/MARTE/
The MARTE supporting documents include (http://www.omg.org/spec/MARTE/1.0/):
Note: The MARTE 1.1 Revision Task Force (RTF) was chartered on June 2009 (MARTE 1.1 RTF Info Page -for OMG Menbers only-). The RTF works on solving issues related to the MARTE specification. Comments on the content of this document are welcome, and should be directed to issues@omg.org. The recommendations and report deadline of the MARTE 1.1 RTF is June, 2010