Mezmerize was released in May, and Hypnotize was always touted as the second part of the saga. Apparently the packaging will match up so that they sit together (I seem to remember the Mezmerize digipak being backwards!?)
For the record, Mezmerize is one of my albums of 2005 and I am really looking forward to the new album. It is to be released as a normal CD and a DualDisc. I caught new single 'Hypnotize' on MTV2 the other day and it sounds brilliant!
SOAD are one of the few bands making interesting, challenging music nowadays