I just spoke with a Verizon rep about the Bionic and he had some interesting things to say.
The Bionic may not even be released until the 4th Quarter possibly even next year! They are apparently having heat issues with the processor. He said they are obviously not going to release a phone until those kind of issues are fixed.
It makes me wonder though, because the Atrix has the same processor. Unless the issue is LTE in combination with the processor being that AT&T hasn't enabled 4G on the Atrix yet.
In light of this information, I think I'm going to just get the Thunderbolt with the extended battery. I've never had an HTC phone, but it's fast, rooted, and there are even custom roms already! Maybe by the time I'm eligible for my next upgrade, dual core will be more refined and worth it.