To expand on what FFF said: It's possible the conversation could just be one that a fan walked up to him and started, throwing in ideas like people on this board have (or maybe it WAS someone from this board?), and not a business discussion determining actual plans.

I talked to him twice during the convention (once a bit fanboyish on my part since I colored his Huntress, JSA and Power Girl stories, and once about the Kirby books), and overheard half a dozen other conversations, mostly initiated by fans from complimenting his LSH and JSA writing, to writing pitches for new series.