In the animated series, I don't know. But if you're talking about the games, yes there is a Mega Man 4. It was released in 1991.
currently there isn't any info about Megaman Starforce 4 , but there will be a crossover game with Megaman Starforce and Megaman Battle Network for the DS
there is talk of a new megaman for 3ds
no you cant
no you can only link megaman games together if it is the same number like megaman battle network 3 blue to megaman battle network 3 white
most likely not but i hope they make one "Megaman EXE Operate Shooting star" is coming out which is a cross between the original megaman and megaman starforce.
probably not but i hope they make one Edit by Luis: There's going to be "Megaman EXE Operate Shooting star" which will be a cross between the original megaman and megaman starforce.
its not coming for usa for now but i tink it wil come in 2011 "Megaman EXE Operate Shooting star" is coming out which is a cross between the original megaman and megaman starforce.
you buy it
people with heads
The final boss of Megaman Battle Network 4 is Duo. It does not matter which version you have. However, after defeating Duo, there are optional bosses.
I highly doubt it sorry :(.
Blue moon or red sun?