The latest firmware update for the PS3 provides wireless support to for the Dualshock 4, affectionately known by fans as "the Happy Crab" You could use it before, but you needed to be plugged in, severely limiting your range.  Here's how. 

http://www.joystiq.com/2014/07/02/ps4s-dualshock-4-now-works-wirelessly-with-ps3/

So, yeah, HAPPY CRABS FOR ALL

Are they the offsprings of the giant enemy crab?

That's actually pretty cool. I could grab myself a PS4 controller and use it on my PS3, which would be preferable, as it's extremely comfortable.

Was that the point of last week's update?