While they haven't gone through any specific detail at the 'Do yet, CO (a member of the OnePass team) did say that international rewad and upgrade travel will see significant mileage increases for the 2006 program year.
It sounds like Y upgrades to BF to Hawaii will jump to 15,000 miles while discount economy upgrades will cost 35,000 miles in addition to any required fees. Upgrades to Asia will jump to 50,000 miles for discount economy tickets (plus fees) and 25,000 for full Y. Europe will jump to 40,000 and 20,000 respectively.
Unfortunately, it doesn't sound like offered inventory will change much ...nor will the fee for the mileage option on discount economy tickets. Mark Bergsrud mentioned at a Q&A at the 'Do today that they don't expect any changes with the system and inventories.
So perhaps as the mileage redemption requirement increases, less people will buy upgrades ...thereby making trans-oceanic upgrades more available ...albeit for a higher price.