I've read on the net, and talked to a few vzw employee's today, and they both said that the issue with the phone is with 4g lte. Right now the xoom tablet launched with 3g. There will be a software uprade for it to go to 4g, but you have to ship it to motorola. What they think is that the software to make the thunderbolt 4g is having issues. It works fine on 3g now but that really defeats the purpose. Like past release dates this is all just a guess, but it's not some huge mystery like others are trying to make it out to be, or a back room deal with apple, htc or verizon. If the stuff was working it would be on the market now. They just wanna work out all the bells and whistles to make sure it's going to kick butt like it should. People in the know, know that the release date has been pushed back. To what date they are unsure. It could be the 6th 10th or even in April. Might as well do it right the first time.
