Fake slide is fake.
The 32nm Exynos 4212 is sampled, they can start a low volume production since it's in house production. I am taking bets that they show it off at MWC. but I don't think it wll be an all new phone. Depending on how long it takes them to address yield issues should there be any, they could start pumping out high volumes at the end of the year at worst or they could be at it by November if all goes by plan.
Just a hunch but I don't think Samsung had enough time to devise an all new SGS3. Samsung already announced the SGS2 LTE HD for the domestic market, so they will probably adapt Apple's time/cost cutting approach. Use the existing design and layout and improve upon individual components and hit the market. We could see a SGS2+ or a similar revision rather than an all new SGS3 even if it may bare the name SGS3. Since they are the largest memory OEM and the 2nd largest chip OEM, they can get volume fast and do domestic lauch in March, European in June, you know the drill... From Samsung's perspective, they could squeeze even more profits from the mobile sector with that approach since the rest of the company isn't doing too well.
Off topic: In the past, trolls responsible for this FUD used to smoke meth and dreamed up next gen phones but they always got the resolution wrong because they hit the pipe and kept repeating the 1024x768 resolution for each new phone rumor they put out. Perhaps the stuff they smoke now isn't as potent as it used to be or they simply wised up and can produce more advanced FUD. Even worse is that this crap can make it past certain sites and they will post it, how naive are they...