(Existing users on existing Roku devices will still be able to access both apps.)

When reached for comment about Google’s plan, Roku referred to its original blog post.

Threatening to block YouTube’s main app on new Roku devices significantly escalates the faceoff with Roku.

YouTube is the world’s biggest source of online video, with more than 2 billion monthly visitors.

Roku is one of the biggest makers of connected-TV gadgets.

Google had previously pulled the the main YouTube app into the Roku fight before.

Earlier Thursday, Roku’s customer update largely reiterated points the company had made before.