Excerpts from this panel as described on Newsarama

http://www.newsarama.com/comics/090620-heroes-DC-universe.html
Quote
Moving to Cunningham’s books, the editor joked that while he’s “seriously biased,” R.E.B.E.L.S. is one of DC’s best books. In regards to the upcoming Starro appearances, Cunningham said that despite all of the appearances to date, the real Starro has never been seen, but is basically a Frazetta-style conqueror.

Sattler then opened the floor to questions from the audience.


Asked if Adventure Comics will have the “shield numbering” to tie in with the Superman titles, Sattler said, “Not immediately.”
"Not immediately" sounds like Adventure Comics featuring Superman & the Legion could still be on DC's plans.

"Our devotion to each other was unexplainable"
"You were kids"
"No Batman, we were Legion"