Absolutely no idea what Apple has planned, but that certainly doesn't keep me from speculating!
The current version of the Apple TV came out in September 2017, so it's certainly time for a refresh. I can see me getting one if they do announce a refresh.
There is a lot of buzz about a new iMac, even though they released an iMac less than a year ago. Of course, with the WWDC coming up, announcing developer's hardware makes sense.