It appears Sony is on a role lately, first releasing
PS3 OFW 4.82 after quite some time and now they've pushed a PlayStation Vita Firmware 3.67 update live with the changelog incoming but expected to reflect their
previous 3.65 revision by improving System Software stability once again.
Download:
PS Vita Firmware 3.67 Update (US) /
PS Vita Firmware 3.67 Update (EU) /
PS Vita Firmware 3.67 Update (JP)
While Sony's
official site isn't updated just yet, as soon as we hear from PlayStation Vita scene developers we'll update this article with what's changed or patched in the PS Vita System Software 3.67 update.
Main features in system software update version 3.67
- This system software update improves the quality of the system performance.
Today's Vita update brings you changes to the Calendar icon, updated Twitter dialog, and new Wifi chip firmware and nothing else.
No DMA in the Wifi chip, so any exploit there would be useless anyways.
Yay, my browser stuff still working, neat

So yea, probably an useless update, Someone was bored at Sony
Crap, forgot to check _everything_ I suspect there is something else... don't update if you're on 3.65.
Account switching still works on 3.67 lol
So it seems some stuff releated to CMA was changed in 3.67 since now it checks the license file for content being copied to the vita from CMA (which...