Nobody should be surprised. Instead, be excited!
As noted by GameSpot , EA's Origin.com erroneously posted a product page for Crysis 3 . The pages have been pulled but it's too late now; the game is listed as coming to the PlayStation 3, Xbox 360 and PC.
We can gather hints from the picture they had put up; it shows a soldier wearing that familiar Nanosuit and wielding what appeared to be a futuristic bow and arrow. He's standing in front of a sprawling city-scape so it seems we'll be returning to the urban settings found in Crysis 2 (the first was set in a tropical environment). As of yet, EA and Crytek haven't officially announced the third installment, but after a good showing with the last title – critically and financially – you have to assume it's coming.
And we probably won't have long to wait for the unveiling, either. If you recall, Crytek said they'd lift the lid on a new "AAA title" this month. So yeah, this is probably it and we're happy; Crysis 2 was oodles of fun.