Everyone is going crazy for the Sony NGP at the moment, but this might be dampened a bit by the news that there will be multiple versions of the console, and that 3G won't be standard.
Much like the Xbox 360 and PS3 in its earlier life-cycle, there will be different models, all with different functionality. All devices will have Wi-Fi, much like the PSP, but not all of them will have 3G - this will come at extra cost.
Andrew House, the boss of SCEE explained that it's "So the user gets a choice. Wi-Fi is available wherever, which clearly is the most important aspect of connectivity and that connected experience; 3G will be a subset of that."