Some interesting info straight from the SOC commandant:
-When the 8 week course starts in January, the intent will be 100% opportunity to attend; class sizes will be increased to ~800 to accomodate
-The correspondence course will still be available for people who can't go in-res in their window due to medical profile, deployments, etc.
-He agrees that the current correspondence course could be a lot better, and said that the intent was never for the correspondence course to be the de facto prerequisite that it has become.
-He's pushing to get the correspondence course scrapped and replaced with a real, facilitated class with an instructor, similar to online master's classes. If he has any say in the matter, he would implement it in a way that taking the new correspondence course would make you ineligible to go in-residence, getting rid of the current norm of doing correspondence just to get an in-res slot.
-I don't know if this varies from board to board, but from his experience serving on major's boards, the only difference between having SOS in residence or in correspondence is that in-res gives you the opportunity to get DG. Otherwise, checking the box is checking the box as far as the board's concerned, as long as you have your PME done.