what is the current state of PM in fb drivers?

Experinmental patch from Ben is in the works.

does modedb is being used on 2.6 drivers?

Yes. 

Is there an API (or lib) to use framebuffers devices without
worring about differents visuals?, 

??? 

to quering, setting or
disabling EDID support? 

Yes. That is the fbmon.c stuff. Still needs work. 

will these drivers export sysfs
entries instead of control via ioctl's?

Needs to be done. I'm not familiar with sysfs so it hasn't been done.

thanks for your work on fb.

Your welcome.