A recent update to the ESRB database showcases a number of games coming from Sony Computer Entertainment America, including Finger Connection, Homerun Hitters, Love Cupid, Busy Sweets Factory, Charge! Tank Squad!, Music Quiz, One Two Boat Racing, Pile Up Bakery, Pinball Duel, Quiz Animania, Ramen Heaven, Sheep Defense, Shogi, Sweet Reversi, and Tonzurakko. Most (if not all) of these games appear to be downloadable efforts, considering the simplistic quality of their descriptions; however, these games are unlikely to be part of PlayStation Minis, as they are rated exclusively for PSP. (Minis can be played on both the PSP and PS3.)
We're currently reaching out to Sony to see if we can find out more about these games, pricing and release schedule. Perhaps these will get a bit more pre-release attention than Pinball Heroes?