Its a firmware update (3.52)

As Europe never sang in the eighties! Although if they did it would have gone a bit like this...
We're updating together
This won't end up well
And maybe we'll update next week
Again? Who can tell?
But there won't be new features
Or even new games
Will things ever be fun on the Vita again?
Its a firmware update DA_DA_DA_DADA

 In other words its another stability patch. Possibly to fight off all the fun and games the homebrew crowd are having, getting closer to native homebrew solutions.