Sony has been moving towards standardized ports recently, on their smartphones and smartwatches.
The PCH-2000 model is so far only available in Japan.
Check the post here:
PS Vita 2000を使っていて何気に嬉しいのはMicro USBでスマホの充電器で充電出来ること。#充電ismylife pic.twitter.com/LvYhCbSKkB
-- Shuhei Yoshida (@yosp) October 13, 2013