The WSJ has a round-up of Google's announced and rumored mobile plans. Interesting details include:

• Google has invested "hundreds of millions of dollars in the cell phone project"
• T-Mobile USA and Verizon Wireless have both reviewed prototypes of handsets from Google
• It hopes multiple manufacturers will make the phones and multiple carriers will offer them
• A Google phone won't be available until next year--at the earliest

For more on Google's mobile plans, read this WSJ Article [1] (sub. req.).