Personally, I've not seen any update on my Android TV, since last year, around October.
I think there is an update this year for your model, check your TV model in this list and Bravo, you'll have access to anything available for your TV.
https://esupport.sony.com/US/p/model-find.pl?mdl=X900E&PRODTYPE=35,84,36,108,146,12,58,34,86,10
Good Luck
