Could it be? An unlocked GSM smartphone running open source software based on Linux? It’s said that you can order a developer preview phone kit ( Neo 1973, named for the year when mobile phones were introduced) from the openmoko.com store. The cost is $300 for the base model or $450 for the advanced kit. That site is not responding now, so check out openmoko.org. Also, see Is your phone free? from the Register.