WPEngine will honor the lifetime membership agreements of earlier StudioPress / Genesis adopters, per Nathan Rice, via posts at the StudioPress community on Facebook. Class act. Wise move. For a variety of reasons, this "keep our word" ethic being one of them, I don't hesitate to recommend their product.
I'm left to wonder what role, if any, the pending release of Gutenberg played in the decision to make this move? Thoughts?