Want to know more about the next generation Mathcad ? Here is the good news:
Mark Walker (http://twitter.com/Mark_A_Walker), from PTC, is looking for Beta testers for Mathcad Prime 1.0:
"Looking for both new & experienced Mathcad users to Beta-test the new capabilities of our next generation product, Mathcad Prime 1.0."
So, Mathcad Prime 1.0 is close to Beta.