I was sort of holding out hope they would buy out Remember the Milk[1]. They already have Blackberry and iPhone sync in their pro version and a gadgets that plug into Gmail and Google Calendar (and iGoogle and Google Desktop etc.). Their model for tasks is much more advanced than the Gmail one- with due dates, alerts, sharing, multiple lists, nice print outs to carry with you etc.

[1] http://www.rememberthemilk.com