The HTC ThunderBolt has had more rumored release dates than we care to keep track of, and today another has been added to the pile. According to two sources speaking to BGR, the TBolt is now set to hit Verizon's shelves on Monday, March 21st. The same date was reportedly spotted on HTC's Facebook page recently.

BGR notes that their sources "don’t have proven track records in this case" which, along with the fact that Big Red normally launches devices on Thursdays, means you should keep a few grains of salt handy with this rumor. Still, we're getting pretty antsy waiting for the ThunderBolt to finally launch, and we're sure you are too, so we wanted to keep you abreast of any developments in the device's launch saga. So now we've got two possible upcoming release dates for the TBolt: March 17th and March 21st. Do you think one of these two dates is correct, or will the wait for Verizon's first LTE device stretch into the end of March?

UPDATE: It appears that the folks at Droid-Life have been slipped the same March 21st date.

Via BGR, Droid-Life