Nokia(s nok)'s new flagship has been revealed. Not the Lumia 928 - that was announced late last week as a "hero" device for Verizon(s vz)(s vod) - but the GSM-friendly Lumia 925. As predicted, Nokia is highlighting the photographic capabilities of the device and its camera is slightly enhanced over that on the 928, but the real difference here is the 925's aluminium frame.