According to the release notes it should be able to be updated to OS 9 so I can use Spotify however when trying to manually update it last night (shows that its on OS 8.1) it keeps telling me that its updated. The actual model number is 4210x which is one of the models listed in the release notes for OS 9. Am I missing something? Did I misread something?
The blog post https://blog.roku.com/roku-os-9
said at the end:
"Roku OS 9 will begin rolling out to Roku streaming players in early November and Roku TVs early next year. It is expected to be completed in Q1 2019. "
So you are looking somewhere between early November and end of March. Most likely, you will have it by end of January as the wave size will become larger and larger.