I get the sense that the White Knight thing is part of this line. Not 100% sure, but I think so.
So, I think what you’re going to get is a bigger format. Things released in ‘prestige’ format, perhaps with large page counts, but not strictly OGNs (although i suspect those will be there).
Earth One, as mentioned, are all 120 page OGNs, no continuity, and very ‘grounded’ (ie, ripe for TV/film adaptation) sensibility. They seem much more constrained to me.
All Star is the better comparison – maybe All Star done right, with more flexibility per story.
I’m pumped about it.