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Nuff said
Real soon now:
http://blogs.ptc.com/2013/09/03/coming-right-up-the-release-of-ptc-mathcad-prime-3-0/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+Mathcad+%28PTC+Mathcad%29
Previous announcements imply Q4 2013, so that's at least a couple weeks away, but the longest compliant release date would be December