As you might recall, GamesBeat's Jeff Grubb has previously noted how "pretty much everything" on Phil's shelf is a hint of some kind - with an Xbox insider also suggesting the cat was out of the bag.
This follows on from last week when a Switch showed up in the background of another Xbox video, featuring Xbox executive Sarah Bond. In other words, we've been seeing a Switch in Xbox videos for most of April now.
There's been talk about Game Pass and Xbox Cloud on Switch, but industry analysts have essentially ruled it out. We've also seen official Halo accounts on social media sharing fan art featuring Mario - which has some fans calling out for Master Chief in Smash Ultimate.
What possible Nintendo and Microsoft collabs do you think we could see in the future? Share your thoughts down below.