2k2 Infiniti Q45 engine?

I just saw the specs on the new Infiniti Q45. Aluminum Block 4.5 V8 340 hp 333ft/lb. Will this be the engine in the 2004 max??

http://www.infiniti.ca/eng/models/q45/specs/index.html

rumor has it it will be the same engine but if I had to guess it will not offer the sane perfornace, untill some of us get are hands on it