Are you switching from a V6 or is this a new order\replacement for an old TiVo box? If it's a V6 then you don't get a new box, just a new remote and a software download.
If it is a switch from a V6 you may have got lucky and they could have lost the order, as the V6 is a far better system with a lot more features. Some of the missing features on the 360 are as follows; Wishlists (where you can set the box to record programs on certain subjects or featuring certain people), undelete, series link+, series link manager, suggestions, setting of series links for programs not in the current TV guide, ethernet control, keyboard support via USB, switching between tuners with constant buffering, skip-back on fast-forward, quickplay, default recording options, cancelling individual recordings from a series link, multi-channel series links, radio channels allowing recording of radio, separation of recordings between boxes, watching recordings when internet is not available and probably a few others I've forgotten.