Ben-DutkaYes, one model of the PlayStation Vita will support 3G. And you can always download stuff from the PlayStation Store.
But like many mobile devices, there will be a download limit when operating remotely via Vita's 3G function. According to Andriasang citing an interview with ASCII, a Sony Computer Entertainment representative has confirmed that 3G downloads will be limited to 20MB. At least, this will be the case at the system's launch; the limit could rise in the future.
Of course, the rep also reminded us that both Wi-Fi and 3G users will have access to the Store. Furthermore, as for gamers being concerned about slow upload speeds, the rep said Sony "is providing software makers with support to ensure that titles that don't give the feeling of technical limitations are developed." What are your concerns about the Vita? Everyone seems to have at least one…