The Federal Communications Commission has just published its certification for a Class II permissive change for the PS Vita 2000 model (PCH-2001).
According to the report, compared to the one published for the original in 2013, the hardware version has been evolved from 2.0 to 2.2, and the change subject of the re-certification is the following:
Antenna and non-transmitter circuit changed from the original device.
We notice that the manufacturer of the LAN adapter is now Foxconn, while the original model had its LAN component manufactured in-house by Sony. The antenna gain for Bluetooth has also been changed from -2.1 dBi to 0.73 dBi.
Below you can see the specs of the new iteration compared with the original.
New iteration
Original Model
Here are the full PDF documents for the certification reports if you're curious to delve into numbers and emission graphs:
This change is possibly part of a reduction in manufacturing costs, but one thing is for sure: considering the fact that Sony is still working on evolving the PS Vita, they don't seem to have any intention to abandon their portable console, as some argued in the past due to the not exactly stellar performance in western markets.