There are a number of other topics about the same thing, please check to make sure your question hasn't been answered elsewhere, next time!
V4.5 have been appearing on eBay with sellers being from Southern California and Idaho (I think).
They are being released in the US now, a few people have seen them in the UK, supposedly. I haven't heard anyone say they've seen them in Canada.
Check out the other threads that have more replies because you're more apt to be kept up to date there.
