The offer for existing TiVo owners to buy product lifetime service with any new TiVo activation for $399 was supposed to expire on February 13th. In fact, the TiVo website still says so. However, if you login to an existing account the $399 lifetime offer is still available with new product activation. Either this is an oversight on TiVo’s part, in not removing it from the site, or they’ve extended the offer and failed to update the T&Cs.
In any case, the TiVo HD with product lifetime bundle is still available through April 1, 2008.