Maybe the A8F will get the update:
According to tech radar
I can't find the original Sony press release to verify the models.
Here’s the link to the announcement. The only two 2018 TVs to get the updates are the Z9F and A9F. Which makes sense as they use the same chipset and processor as the 2019 models.
https://www.sony.com/electronics/support/articles/00230463