SCEJ has just announced via press release that during Tokyo Game Show 2013 it will have over 10 PS4 games available for attendees (most of them in playable form).
In addition to this, SCEJ also said that it will they will show over fifty titles at Tokyo Game Show 2013 (including games for PS3, PS Vita and PS Mobile).
If we take a look at the list of publicly announced games for PS4 so far (Knack, Deep Down, Driveclub, Killzone: Shadow Fall,Wolfenstein: The New Order, PlayRoom and Assassin’s Creed 4: Black Flag), it means we can expect to see four brand new yet to be announced PS4 titles at this year’s TGS (although this figure “FOUR” is still a speculation).
Tokyo Game Show 2013 is scheduled for September 19-22, 2013. Sony has just opened dedicated website for it as well, you can check it out HERE (its in Japanese).