Mark your calendars, to-do lists, Remember the Milk extensions, Post-It notes or whatever you use for reminders: the HTC Touch, er… XV6900 hits Verizon Wireless. That’s the date that Engadget Mobile has for on-line availibility of the XV6900. You’ll have to wait until April 30th to “touch” one in a Verizon Wireless store.No difference in expected price from what we heard out of CTIA: $349.99 after $50 mail-in-rebate. We also heard tell of an extra $100 off if you purchased a qualifying voice and data plan combo, so keep a watchful eye in case that deal is good too. Here’s an interesting factoid: the original VZW press release announcing the XV6900 doesn’t mention EV-DO or VCast. Error, omission, or… uh oh? I’m sure it’s in there based on the commentary around web-surfing, e-mail and such, plus the EV-DO indicator shown in the official picture, but why not mention it? I was only looking because I wanted to see if was the faster EV-DO Rev A. My gut says Rev 0.