Dylan Jobe, Game Director for Warhawk, has confirmed that Warhawk is still on schedule for simultaneously release worldwide. A comment on the blog post for Warhawk FAQs states that SCEE is working hard to get Warhawk ready for release in the UK in sync with the US version.
"I want to let you all know that our SCEE team is working very, very hard on getting the game ready. And I want to assure all of our UK players that we *do* care very much about shipping Warhawk simultaneously with the US version and that is still our goal.
We just want to make sure that when we say “we’re gold” we really are done! These things have to bake for awhile before we can feel comfortable saying “it’s done”…
…I know you all can appreciate that."