Namco Bandai's free-to-play frenzy seems to be continuing.
A translated Famitsu article from Gematsu says that a free-to-play version of Soul Calibur is currently in development for PS3. There's no word yet on when it might be released.
A F2P Ace Combat title is also in the works.
Don't forget that Namco Bandai was also the first publisher to indulge Nintendo's free-to-play curiosity by releasing an F2P version of Wii U title Tank! Tank! Tank! earlier this year.