It's official, the HD TiVOs have finally begun shipping. They're going to be priced at around a thousand bucks for now, but expect a new customer special in the next few months that should make it cheaper (I'm going to guess $399 or $499 with a year contract).
The demand for these units is through the roof. I know at least three friends with existing pre-orders and I have no idea if the current shipments will meet even the pre-order demand. Yesterday I heard that BestBuy put their first shipment of 200 units up on their website and sold out of them within a few hours.
Early reviews are already being posted to the TiVo Community forums, and they're already uncovering a whole range of problems with signal conversion. I'm a technogeek and I love gadgets, but I gotta admit HDTV can be insanely complicated with the different formats and up-conversion on both a TV and a HDTivo.
DirecTV has promised me a review unit soon, though I don't have a HDTV monitor yet and am debating buying a 30" tube set while I wait a year or two for LCDs to come down in price (I'm also open to review any HDTV sets here, if any company would like to offer that for me).