With all respect for the new Q camera - I do hope that Leica will use some of its technology (fast AF/IS/fast response) and put it in a new T body.
I understand the T has not been very succesfull despite I believe it is still not a bad camera and the lenses are excellent as is the IQ.
I think one of the biggest faults was the marketing focusing too much on the luxury factor and not enough on the simple user interface and excellent lenses. Also the first firmware was too slow.
I would still not want to exchange my T+lenses for a Q, because I enjoy the flexibility a lot to either use the fast Summicron 23mm, or the UWA-Zoom , or the standard zoom, or even Tele if needed.
Now we could hope for an version with interchangable lenses based on the Q, but how big would these become? I think the should not give up the dx-sensor based line beside their FF products.