Hi Sean,
It's too soon to say anything serious about version 2.0 of PixInsight. Too many unknowns. Version 2.0 of PixInsight should be released in 2013, or early 2014 as a maximum.
Software development is getting hard and complex in unusual and weird ways. Operating systems will be transforming our efficient and productive workstations into
dumb environments more and more similar to smartphones. Qt 5 (as you probably know PixInsight is based on the
Qt framework) will be posing unexpected problems to adapt PixInsight's modular architecture to new GUI constructive paradigms. It's going to be hard, but we'll have to adapt to the new working environments or die. Or become obsolete, which is even worse.
Some general goals for PixInsight 2.0 would be:
* GPU acceleration via OpenCL (perhaps we'll see some first attempts to do this in version 1.8 or 1.9).
* Completely redesigned workspace with more dynamic features (Qt 5 will play a key role here).
* Complete platform independence. PixInsight should look *exactly* the same on all supported platforms. Actually, we have already achieved most of this goal with version 1.7.
* Better JavaScript runtime with an integrated debugger.
* Integration of the Python scripting language.
* Implementations of new multiscale processing techniques: curvelets, shapelets, hybrid morphological-wavelet transforms (this is also a goal for the last 1.x versions).
Of course, I don't promise anything