[Freesurfer] difference between dev version and the final stable version?

Hi FreeSurfer community,

I have a question about the current dev release - how different is the new 'stable'

release going to be different from it?

Is it mostly stability and compatibility between different platforms issue?

Or are the actual processing or computational steps going to be different also?

Can I start processing some brains using dev release and then continue processing

using new 'stable' release?

Or process half of my images with dev release and the other half with new 'stable'

release and then do some inter-group comparisons?

And another small question - should I also use Red Hat 9 download for Linux

Fedora Core 3?

Thank you.

Regards,

Renat.