Verizon posted HTC Merge on it's site, but took it down immediately.
Don't know how this person at android central forums get to the Verizon Wireless website page on the HTC Merge, but it was quickly pulled down, maybe Verizon official found out the page was leaked.
According to this twitter message (who is this guy!), it is true. But you have to take this with a grain of salt as the hardware that has been circulating around looked pretty finalized. LTE won't be ready for phones until 2011 - it will be a mistake for them to delay this phone until Q1 of 2011 when it is this close.