In a burst of tweets in the last 10 minutes, Sony has confirmed the fact that the PSV is region free, something that had long been hinted at.
UPDATE: The President of Sony's worldwide Studios, Shuhei Yoshida has recommended that people do not import PS Vita's from Japan. He says "There are people who are interested in importing the Japanese version of PS Vita from outside Japan, but I personally do not recommend that." in a tweet.
As originally posted below, I'm pretty sure this has to do with the 3G issue and local services, but there may be deeper problems, anyway you have been warned. I'll wait until the UK launch for this one.
Don't get too excited though, the PSP was region free but my Jap original wouldn't recognise the UK comic store and the PSN news went straight to Tokyo.
Also, not sure how the 3G system works, that might not be globally compatible across CDMA and GSM networks. UPDATE - Checked this out, the Japanese model will be HSDPA/HSUPA *specification for Japanese region* - so won't work on UK networks. So, if you're going to import - get the WiFi version.
Finally, If there's just a few months to wait until a western launch, that's not as bad as the nine month delay on the PSP launch. Also, I will be happily raiding Amazon Japan, PlayAsia or anyone who will ship them, for some of the better games that won't make it out over here and there's bound to be a heap of them!
Finally, finally if this things sells as well as suspected in Japan, imports will be rare and super expensive.
Have a good weekend.