"Well, everything makes sense now!"
"No, but thanks for trying."
However, parsing the PRspeak of the announcement, it sounds that those hoping for a 'new' ending, or for the Indoctrination Theory to be proven correct, will be disappointed. It sounds like there will be no new gameplay elements at all, not even extra dialogue during the finale which will better explain just what the heck is going on. This may change as more news is revealed closer to launch, but this sounds like it will mitigate the damage rather than reverse it.
Still, a good move on BioWare's part, even if it doesn't go as far as some might wish.