Kantor on 17 August 2013
The PS2 only saw one major first party game after the PS3's launch, and that was God of War 2.
The PS3 is already getting Ratchet & Clank: Into the Nexus and I think it would be extremely harmful if they made any more, so I assume that the next LBP (not called LBP3) will be on PS4. I don't think there will be another Resistance.
EDIT: supporting evidence for my prediction: http://uk.gamespot.com/news/insomniac-seriously-considered-resistance-4-6408517
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