According to http://www.firstshowing.net/2009/02/...-2-days-early/

The US release date of the TF2 movie has been moved forward two days to make sure the American fans get to see it before us. They now have a 24th June release, while ours is still slated for a 25th June release.

I guess it is more of a simultaneous release now, with the time differences...