Val Zod is present yes, and in an apparent romance with Power Girl!
As to the Justice League... well, a crossover was planned from the early stages of the series, James Robinson talked about planning it, but then he left and Earth-2 has been bounced around like a pinball.
I don't get the sense that anyone at DC cares much about Earth-2 anymore, I don't quite know why that should be given Robinson and Nicola Scott's terrific success with it, but the only people to blame for any of this are DC themselves. They are the ones completely responsible for the path Earth-2 has taken since Robinson was forced out.
Would not the current new gods/AM plot be the best time to bring that about?