I thought the gist of the GI article was how 2K thought about the process of creating a non-NFL game. It made sense to show sketches of stadiums, along with more completed ones with the Hanger and Rhino stadiums.
Who knows how old those screenshots really were? I'd bet January or bit earlier, which means 2K has had a few months to get it into playable form.
It also tells me that we should see APF sooner, rather than later. Playable version in late April? Then a June release seems possible, maybe early July.