For the Roku Ultra there is the current sale "While supplies last":
Sale $69.99 was $99.99 Save $30
Offer ends 5/29/2021. While supplies last.
https://www.roku.com/products/roku-ultra
Perhaps a new Roku top model Summer 2021? Or, is this huge price drop only a temporary reduction for "
Prime Day"?
IDK, we've already had 2 annual "Ultra" models, the
Ultra for 2019 and the
Ultra for 2020, will there be a third new Roku Ultra for 2021?
Google is a little less clear, as most of the upgrades happen in software, but 8k / upscaling from lower resolution has higher processing requirements + continuing improvements in process technology will eventually bring a hardware upgrade. Then there are the new for 2021 TCL 8k TV's and TCL's introduction of GoogleTV integrations:
TCL’s 2021 TV lineup to include Google TV and more 8K models
TCL TV 2021: All the 8K and 4K TVs announced so far
I can't tell from those articles if the 8k TV's will get GoogleTV integration, but if TCL is pushing 8k TV's like they did 4k TV's - my first 4k TV's were TCL's - eventually TCL will want to include GoogleTV integration in their 8k TVs.
I'm mostly looking for a Chromecast dongle with higher processing capabilities resulting in less heat generation at HD/4k, not necessarily interested in 8k particularly - although the Benq 4k 3280U does a great job displaying the 8k HDR content I've watched on youtube.