The reference indicates this upcoming Apple TV uses the same architecture found in the A12 and A13 Bionic chip. The Apple TV 4K that’s available right now uses the A10X Fusion, therefore an A12 or A13 Bionic chip would be a better upgrade.
Additionally, Apple is also looking forward to launch an e-sports-centric high-end Mac at its annual WWDC developers conference next year. This will be the first time Apple will enter such a segment and it is still not officially disclosed whether this will be a desktop computer or a high-end MacBook Pro, though rumors state that it might be an iMac.