[Haemm0r]

It is still possible to get OTA Updates for the Xperia Z2 Tablet (Snapdragon 800) using the AICP Rom too. I'm really glad that I bought this device.. Link: https://forum.xda-developers.com/t/rom-official-aicp-15-0-q1...

[techrat]

> It is still possible to get OTA Updates for the

...for as long as the maintainer continues to support the device. And maintainers are all volunteers.

[Haemm0r]

... of which I am aware of as it is a "custom rom". Which means it is nothing different to what the OP is using.