You have one friend that did not know about the EVO 3D and all of a sudden that means the masses? We've discussed plenty how this phone has had barely any advertising. Please show a source that "geeks know about this phone."
5 hours is a long time. I've known plenty of stores that will stay open longer on the launch of a big item. Please provide a source saying that they wouldn't do this.
Where are you getting your information? Both Best Buy, Sprint, and Radio Shack are open on Sundays. Stores do not close on the day before July 4th unless they are a small business or Chik Fil A.
This forum is filled with phone geeks (True or False?) Go up to people with an HTC EVO that's not on this forum and ask them about the HTC EVO 3D. They will say the what? I have a female friend with the EVO. Doesn't know anything about the HTC EVO 3D and she doesn't really care about it. She just got her HTC EVO a few months ago. Since when has a Corporate Sprint Store extended their hours on a Sunday for a phone? And 3 July is before the 4th of July, so sprint would extend their hours on 3 July, one day before the 4th of July? Wouldn't make sense. I guess you didn't read my post about the store being open for 5 hours on a Sunday.

It seems more and more people have the assumption that Sprint is starting to think like the "geeks" on this board and will release on the 3rD (June or July). Somehow I think that's a stretch that Sprint is as clever as majority of the people on this board and they could release it on a day that makes no sense to anyone.