What is happening to First Class - can anyone summarise?

I travel from Godalming to Waterloo in first class most days. We typically have 450s or occasionally 444s but i understand these we will soon have 442s?

Anyway, I’m keen to hear what’s happening to first class? Are the numbers of seats reducing significantly on these trains? I travelled in the 450 today which had a new, small 8 seat first class in the middle of the train - 2 pairs of 4 seats around tables  - is this the future? I’m sure there used to be at least 24 seats in the first class compartment on these trains? 

Thanks!