Nothing new to report on The Sparrow, and this article by Mark Harris explains why, in a general sort of way.
The Sparrow is a classic “passion project,” and the climate for that kind of thing is withering right now, so don’t hold your breath while you wait for it. Still, as Vincenzo Guiliani would say, “We are not talking about ripe peaches.” It’ll keep, and the longer it takes to put the package together, the cheaper and better the special effects will be.