Looks like 7/18. Production starts two months after. It doesn't list the Raptor specifically but the Raptor is a model of the F-150. You'll get yours (if you're lucky) in October. Most of us by the end of the year potentially :
Might even be the chance that some dealers will have information available right now, maybe something that could be found on other forums and Ford websites. Some digging for that information should bring it up.