My prediction for Dec 31, 2007:
Wii: 16 million
360: 15 million
PS3: 7.5 million
Wii - Will continue to sell very well but wide availability in the coming months will cause demand to cool down slightly when people no longer have to line up or hunt for them. Items that are in limited supply and high demand always seems to fuel even more demand and that fueling will be lost for the Wii with wide availability.
360 - A string of solid exclusives and the release of Halo 3 and Grand Theft Auto 4 will move several million units over Christmas. Weak demand will remain in Japan except for a few small blips when exclusive rpgs are released. A price drop in October would likely help move a lot of units but with Microsoft's Home and Entertainment division under intense pressure to make the Xbox 360 more profitable it's unlikely to happen.
PS3 - Will still be hurt by it's high pricetag and it's few good exclusives will move a few million units worldwide. Sony has to be extremely careful or it may begin a dangerous downward spiral of game companies not releasing games until the installed base is built up and the installed base not being built up because of game companies not releasing games for it. Sony needs to pull an ace from it's sleeve this Christmas or not even Gran Turismo will be able to save it next year.
