There is a new generation of PPQ pistols coming soon - The PPQM2. It has the mag release like the PPX, but otherwise looks like the PPQ we all know and love. Sadly they do not use the same magazines...
http://www.waltherarms.com/products/handguns/ppq-m2/
Internet rumor is that the original version of the PPQ with the European/paddle style magazine release under the trigger guard is going to be discontinued. I really hope that this is not true, because I prefer the paddle style release.