I imagine that by now Delaney can tell you where the punctuation mistakes are in the SEC Network's formation documents. Nothing new will come out of this announcement as far as he is concerned. The SEC may be waiting for finalization before announcing their expansion, although I think that ESPN as a partner in the SECN will not be crazy about raiding schools from another ESPN league like the ACC.
The Big 10/Fox already have all the cards they can play, and just have to make a decision on how to play them. Does the BTN want to go head to head with the SECN in the south, and likely lose, or expand straight east to the ocean? Or do nothing? I know which answer I like (expand straight east), and I can certainly make a strong case for it, AND it is consistent with the Big 10's past decision making (passing on Texas and Missouri, adding Rutgers and Maryland). But ultimately only the Big 10 Presidents know what they want to do.