Moodio stressed that this was "very early," and that there were "different design iterations" in progress. It might not resemble exactly what you see below, no matter how accurate the leak might be. It lines up with Google's strategy of reintroducing Inbox features, though, and would be well-timed when the I/O conference takes place in May. If you're still suffering from Inbox withdrawal, you might get your fix relatively soon.