It doesn't seem to common knowledge that we list European release dates on our Release Dates page, but we have for quite awhile. I see posts on the message boards and get the occasional e-mail about it, so just go there and scroll near the bottom (or click the 'Europe' link near the top).
In any case, we have a fairly large update to that section of the section, with many new games added, plus updated dates for a lot of games, some of which didn't have an actual specific date before.
While these are based on releases in the United Kingdom (and are accurate as far as I know), it should give most gamers in Europe a good idea when to expect any given game to arrive in their area.
That's it! Go read the page, and stop asking me where the European dates are.