There was a recent Jane's article qouting Russian sources who claimed to have seen photographs of it. It was claimed that it looked Russian with blended wings and intakes etc. Apparently the Chinese are fishing for the 117S engine from Russia- believe what you will.
regarding quality of information in abovementioned Jane's article:
Both prototypes are powered by the same Saturn/Lyulka 117S engines fitted to the Sukhoi Su-35 while a new engine jointly developed by Saturn and the MMPP Salyut plant is in its design phase.
fail: T-50 is fitted with Izdeliye 117 (AL-41F1)
Russian aircraft programmes - even in Soviet times - have often had year-end deadlines to complete first flights that came down to the wire. Sources close to the programme told Jane's that "the end of the year deadline may not be met, but the aircraft will fly very soon - either before the end of 2010 or just after the new year".
fail: you soon will know, why and when
The programme designation has been changed and is now officially being referred to as the 'PAK-FA/MI' (MI meaning Mnogofunktsionalniy Istrebitel, or Multirole Fighter).
fail: first of all, not 'PAK-FA', but 'PAK FA'. second, there's no such thing as 'PAK-FA/MI' (as well as 'redesignation' mentioned)
'PAK FA' is PAK FA, and there's no 'MI' - there's separate PMI entity, Perspektivny Mnogofunkcionalny Istrebitel = Advanced Multifunctional Fighter
in short, PMI is a Russian designation for FGFA