Aaron, our resident mad scientist, hard at work on version 7.0!
Great news: we're in limited beta testing for the new version. Our focus has been the flowsheeting tools (symbols, streams, look and feel), and you'll still see a number of engineering improvements (a gas membrane UnitOp is coming, for example). We are incorporating a much more modern toolset with an eye toward (1) fitting in with other drawing/flowsheeting tools standards, and (2) addressing the 6 years of feedback from the 6.X versions. Nothing too scary, so stay tuned here for more information.