I read this on Edmonds:

7 of 10 2005 Honda Oddyssey by tsx Mar 26, 2003 (1:01 am)
This is confirmed details on the 3rd Generation Oddyssey redesign.


Model Debut Year: 2004 Fall
Mechanical Changes: V6 3.5-Litre i-VTEC
- Power will be increased to 250 and torque will be 260. Better Fuel Economy due to the addition of Intelligent VTEC configurations.
- AWD drive system, based on the current Honda CR-V.
Appearance Changes: Based on the sketches from Honda, PRETTY WILD STUFF! It still has it's boxy look. The Front has an increased height, Aggressive grill (similar to the TSX) Big Head Lights. Also a Sports version will be available. Other than appearance no mechanical changes for this model.


Feature Changes: 6(sports) 7 and 8 Way seating configurations. Heated-Cooled seats for front and center rows. Power doors will use the belt driven system. LID interior dash lights. HID headlights will be an option. 17' Wheels. Factory equipped Auto-Start sytem. Central Comupter with fuel, temp., mileage etc.. Roll Down windows for all 3 rows. 50/50 split back Magic seat. Dash Mounted Gear Shifter with a Manual Shift Mode option. Power Lift Gate. Auto Climate for All three rows. There are several MINI-VAN FIRST features that are useful, which i cannot release as of now.


So far these are the details that i know. Honda might unveil the concept model in the 2003 New York Auto Show but then Honda always waits until the last minute.