CSI released a new version of ETABS with concrete slab design with post-tensioned also being able to be modeled. This new version makes ETABS the first major 3D FEA program with the ability of modeling PT effects. We at FORSE find this to be a significant enhancement to the ability to perform more accurate analysis and design for the full 3D effects of PT.
since I started FORSE, over 3 years ago, there have been rumors of a new ETABS version with all kinds of enhancements. well, it appears that new version is here: http://www.csiberkeley.com/etabs2013