Siliconvalley.com has two articles today about Nokia's Game Deck. The first one mostly points out the confusion and uncertainty that surround it, as well as offers some ok info about it's competitors.
The second one is a more comprehensive review of the N-Gage, the first Nokia device to run the Game Deck platform. To sum up, the N-Gage gets trashed for being difficult to use, opaque and expensive service+pricing plans, no games, and generally too expensive.
Neither articles points out that Nokia is a platform coordinator - so mobile games competitors face a seriously uphill battle.