Not sure when it arrived, but you can now download the PlayStation Home arcade machine to the Vita (via the EU PSN at least) and enjoy some mini-game fun on the go. It comes with WipEout 2D, Ice Breaker and a Scribble Shooter demo for free.
The 108MB download provides yet another source of diversions for Vita owners and perhaps will pave the way for some more Home content making it from the PS3 to Sony's handheld. Never having had a PS3, are there lots of good games for this? And does it do proper arcade conversions?