Apple TV 2 and 3 are currently in development and could arrive as early as June 2020.
The next TV will likely be the third generation Apple TV which is expected to be priced at $399 (£299) and have a 4K screen.
This is followed by the fourth generation Apple Watch, which will be priced around $399 and have 4K displays.
The fourth generation iPod touch, priced at £549, will also be the first to come with 4K screens.
This will be followed by an Apple TV 4 in 2021, priced around £599 and have an 8-inch screen.
This will be the last generation of Apple TV, but Apple TV 3, which is currently in production, is expected for release in the first half of 2022.
Apple TV 4 is expected in the third quarter of 2022, with an 8.9-inch display, a quad-core processor, and 64GB of storage.
Apple TV 5 is expected around the same time, with the same processor and 64Gb of storage, and it will have a quad core processor.
There is also an Apple Watch 3, currently being developed and expected to launch in the second half of 2021, but this will be $399 (£329) and will have an upgraded model with a larger screen.
There are also rumours of an Apple Music 3, a 4.1-inch device with a more powerful processor and a 4G LTE antenna, expected for later in 2021.