Joining the ever-growing library of PlayStation Network PSone games is none other than the Complete Works version of Rockman 4. Sony has announced the game will release on the Japanese PlayStation Store on February 9th for the cool low price of 600 Yen (roughly $7.31 USD).
The game is reportedly 395 MB in size and as with all PSOne classics, it's compatible for play with both PS3 and PSP systems.
With the North American PSN currently receiving the Complete Works titles every-so-often (Rockman 2 set for release this week, actually), it's safe to assume Rockman 4 is in our future, too.
I'll keep you posted.