Looking at the upcoming releases and such...
Through rest of January,
MAG (NA/EU/JA)
End of Eternity aka Resonance of Fate (Japan)
Last Rebellion (Japan)
Feburary,
WKC (NA/EU)
Star Ocean: The Last Hope IE (NA/JA/EU)
Dante's Inferno (NA/EU/JA)
Bioshock 2 (NA/EU)
Last Rebellion (NA)
Heavy Rain (NA/EU/JA)
Now I listed those titles because I have a firm belief that they have the power to respectively sell the ps3. So in the territories of the above game being released I expect little to no drop, maybe even a few thousand ps3's sold. I stopped at Feburary because it is in my opinion that once March hits this prediction can and will hold true all the way till 2011. Why you ask?
March,
Battlefield: Bad Company 2 (NA/EU)
MLB 10: The Show (NA)
Yakuza 3 (NA/EU)
Drag Age: Origins - Awakening (NA)
Final Fantasy XIII (NA/EU)
God of War III (NA/EU/JA)
(titles that may or may not have an impact)
Last Rebellion (EU)
R.U.S.E (NA)
Quantum Theory (NA/EU/JA)
All these titles could sustain the 200k+ for the ps3 until the behemoth releases and yes of course I am talking about Lego Harry Potter! But Gran Turismo 5 follows up sometime after :D