After the Sony conference an interviewer made some questions to the Sony entertainment president (Source: ustream.tv). Do consider that he might don’t know the detailed roadmap on Alpha and Nex cameras. That’s why he might made a “small” marketing mistake:
He tells that CES is not really the event to talk about photography equipment especially professionally. He said that PMA should be the event to announce such devices.
Now, I am almost sure the NEX-4 and A77 will come long time before the PMA (which takes place in September only!). But Sony marketing guys should be more careful when saying we should wait until September because one can get the idea that there will be no new Alpha and NEX cameras/lenses in the meanwhile!