Roku has a very bad habit of reusing model names. Even worse, they and some retailers often refer to the product by a year number, even though the same exact model may be sold for several years, or a retailer may still be selling old inventory. You really need to know the model NUMBERS to tell them all apart.
Any Roku model that can run under the current Roku operating system release is still supported and will continue to receive updates. This is true even if it is no longer manufactured and sold as part of the current product line, Many models are supported 5 or more years after they are no longer considered part of the current product line.
See this Roku Developers Page:
Currently manufactured and supported:
Ultra LT 4800X
No longer manufactured, but can run the latest Roku OS (i.e. "still supported"):
Ultra LT 4662X
Note that this page does not seem to list minor last-digit product number variations.
When a device is obsolete and can no longer run the current Roku operating software version, it is considered a "Legacy" device. It will not update beyond the last Roku operating system version it can run. It will continue to operate and run its current channel apps until the point that any given channel app no longer supports that older operating system and/or requires features and capabilities added in later models.
There are no Ultra models at all on the current Legacy list.
Roku Community Streaming Expert
I am not a Roku employee, only a user like you. Please, no support questions via private message -- post them publicly to the Community where others may benefit as well.
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Ultra 4800 | Streaming Stick 4K+ 3821 | TCL Roku TV 43S245/C107X
