Looks like another date is being thrown around for a possible release for the HTC Myth Thunderbolt. According to this notice being sent to Best Buy stores, the device is shown with a launch date of March 10th.
Another thing to consider is the devices listed under it. They are older release dates. It is possible this could be an older flyer with the Thunderbolt listed at its previous launch date. There have also been countless Best Buy leaks suggesting other dates, so for now let's keep this under the "rumor" category until Verizon finally gives us a solid date.
Thanks to unknown629.