Is 7" the new 10"?

7" devices are a rage.
After the success of the first 'wave' of 7" devices (1st Gen. Kindle Fire, Nexus 7), and the iPad Mini cannibalizing both iPad AND iPod sales for Apple, the 7" (to 8") tablet category seems to be taking over the tablet market.

After playing with 7" devices for a while (Both nexus and iPad mini), I can definitely understand why. The form factor is simply more successful than 10" tablets. Easy to hold with one hand (iPad Mini feels as light as a kindle), good enough to work with (Thumb type is possible) - Seems like this is the spot for tablets.

So, while 10" tablets are getting more and more laptop-like (Windows 8 convertibles, for example), 7" devices will get retina-quality screens, and probably become the new form factor size for tablets.