Here's the dream:
Apple Smart Bulb: Give me a smart bulb that's matter over thread, high CRI, accurate colors, plays well with light switches, always connected. Adaptive lighting and the ability to sync white temperatures so every light in the room is the same shade of white. No hubs. (I know Apple doesn't make smart home devices like this but nobody else has done it right, I always have to compromise, so let's see Apple's take on Edison's baby)
realistic hopes:
HomeOS - advanced notifications and automations using AI. I'd say buy Homey, but LG already did. But something that full featured and customizable, and with Siri integrations and iOS native notifications.
AppleTV - higher refresh rates, like 4k120, and have it run the HomeOS from above.
Could be happening, would be exciting:
Apple AirPort Extreme refresh - mesh router with thread to enhance Apple Home / Matter smart devices
Apple Home Camera - face recognition and AI to enhance automation / apple secure video
Not this year but eventually:
iPad mini Pro - Face ID and OLED promotion screen
CarPlay 2.0 (that wouldn't require a new car)