Lol. No. Sony has always had the largest stable of developers and constantly create new IP every generation. They didn't do anything different. Uncharted, Motorstorm, Lair, Heavenly sword, Resistance, Flow, Folklore and that is excluding the PSeye games. The largest influx of new IP from Sony for the PS3 was at the start of the PS3's life. They just kept the ball rolling with familiar franchises and kept on throwing a few new IP's in the mix to keep it fresh.
Still unsure about what is coming for the Vita as far as japan is concerned but I am sure that Sony will create new Ip as usual.