http://www.arms-cool.net/forum/thread-66860-1-1.html
Someone posted some pics of his on Taiwanese forum....
Key take away points:
-new blow back system design, incompatible with old G17 parts
-reinforced mag catch for the long mag(extra weight)
-reinforced mag-to-nozzle contact seal
-better(and different) trades on the plastic slide
-shoots better on stock hammer spring than upgraded ones
-propane ready(though supposedly someone had already cracked their slide, knowing TM though the metal upgrades should be available soon)
-good recoil power(his word, not mine)
Other notable thing on that page...
-He upgraded his with Guarder lower frame, with updated design that should solve the problem of snapping front screw post(I am very interested in this)
-Guarder Desert Storm Glock 17 slide in STEEL might be out soon(out already in Taiwan)....