The exact email reads:
Three Years of AppleCare Protection Plan for Apple TV
Your AppleCare Protection Plan for Apple TV now provides (instead of two years) technical support and additional hardware service options from your Apple TV purchase date.
We are extending your plan an additional year at no charge to you. You don t have to do anything.
The new Coverage End Date of your AppleCare Protection Plan for Apple TV will automatically be adjusted. You can verify your coverage on checkcoverage.apple.com.
The AppleCare Protection Plan Team
What the Cupertino giant announced today was a huge leap for the promotion of AppleCare+ for Apple TV which happened in the last two weeks. In addition, the newly-modeled Apple TV 4K featuring its Color-Balance experience also arrived last month.