Roku recently announced that they would be rolling out their operating system update OS 8 to devices. They have released a list of OS 8 supported devices on their blog. You can check out the full list below and details about the OS update at this link.
OS 8 Supported Roku Devices
Roku Streaming Players:
- 4660X
- 4640X,
- 4630X
- 4620X
- 4400X
- 4230X
- 4210X
- 4200X
- 3910X
- 3900X
- 3810X
- 3800X
- 3710X
- 3700X
- 3600X
- 3500X
- 3420X
- 3400X
- 3100X
- 3050X
- 3000X
- 2720X
- 2710X
- 2700X
- 2500X
- 2450X
- 2400X
Roku TV:
Not sure of your Roku model number? You can find it the on screen settings via your Roku.