Here's the report via Transformers Movie News..and remember we have no way of know for sure if this is accurate.
"Local sources are reporting that Li Bingbing character will be a "freak female scientist". According to the reports, she is manufacturing Transformers and is known as "the mother of Transformers". In one side, she’s sexy and intelligent and on the other she's a cold and tough person. Very much like a cross between King Kong and a Barbie doll. Initially, rumors spread of an appearance by Circuit Breaker. Is this her? We don't know. Only time can tell."
If true, it certainly sounds like it could be Circuit Breaker -- a female villain from the comics who despises all Transformers, Autobots and Decepticons alike, after she's left crippled in an attack. She creates a metal suit that allows her to walk, and also gives her the ability to shoot electricity, disrupt circuitry, and fly. Obviously Bingbing is sporting no such suit in those pics, but it's entirely possible that she's playing some variation of this character. Thoughts?