Also nice, for it's I/O set. Given the 50-70C temps, I'd be temped to velcro mount a 120mm low rpm fan that could run off a USB port's 5V.
Barebones Nano is going for ~$136 in the US. $40 for 4GB RAM...and then whatever SSD. I've got an old OCZ Agility 64GB I could toss in there as well as an S-Flex fan I could mount on top. So, $176 for a nice little, low power browser/media PC for the TV.
The most interesting feature of the Pico 320 is the 2,2W (SDP) Z-series BayTrail, first time seen on a, ahem ..."PC" (I'm not taking into account rare hybrids like ASUS Transformer or Acer Switch).
But set aside the nice news of this very frugal SoC, the pico, with its soldered RAM and storage, and the lack of any serious I/O looks like very disappointing to be a "real" PC (it looks like rather a phablet without the screen), and as far as I know it will be a tad more expensive than the nano 320 (as the pico includes the Win OS license).