The first picture of what appears to be the Sony ST25i, aka ‘Kumquat’ have surfaced. The Sony Kumquat was one of the phones that appeared on a leaked roadmap of Sony smartphones that are set to be released sometime this year. According to the leaked roadmap, Sony is expected to release three smartphones during Q2 2012: the LT22i Nypon, MT27i Pepper, and ST25i Kumquat. All three phones are expected to be announced this February during Mobile World Congress in Barcelona, Spain.
The Sony ST25i Kumquat will feature the same design as the Xperia S; it will feature the same transparent notification strop on the bottom of the phone. The phone is rumored to have a 3.5-inch display with 480 x854 resolution, 1GHz dual-core processor, and 5-megapixel camera. More specs will be revealed once the phone is officially announced, hopefully at MWC in February.
Source: Xperia Blog