A new model of Sony VAIO PCG-1J1L and 1K1L handheld PC has been approved by the FCC.
Unfortunately the user manual and pictures of this PC are not disclosed yet, but from what I was able to put together from the label info, picture and test reports that are available, it looks like a good candidate for the UMPC category:

This is definetely not the Sony Vaio UX model announced last week. The label ID clearly states that it is VAIO PCG model, and Vaio UX50 and 90 come with VGN prefix.
Also even if we can only see the back side of this computer it doesn’t look like UX - the sides are not symmetrical.

Though it is difficult to tell the exact size of Vaio PCG-1J, the stylus next to it makes me believe that it shoud have 5-8″ screen. It also runs on Windows OS, has Wi-Fi, Bluetooth and GSM/EDGE connectivity options.
From all that we were able to piece together fom the limited information available on FCC site, Sony VAIO 1J1L looks like a good candidate for UMPC category.

Update: Despite my arguments to the contrary, looks like it’s Sony Vaio UX. Check these pictures at Micro PC Talk. (Through Jake on the Run).