The only thing that Fuji has over all other current DSLRs is its sensor. If fuji give that up, they will never sell another DSLR.
Seriously, the S2/3 bodies are rubbish, nothing more then a sensor thrown into a F80. They are slow, have a 3 shot RAW buffer, Dttl flash, use
AA batteries and so on.... But i sold my D2x to buy a second S3 because the 14bit RAW file is to die for.
As for the S4, my guess is it will be a 8x8 (16 mega pixel) sensor, with the latest fuji SR sensor, using either a D200 or F6 body. I expect it to range from ISO50-3200, 8 shot RAW buffer, use
AA batteries
and maintain those amazing fuji colours. I think it will cost around $3500aud.
fingers crossed anyway...