SA Model Year diferences - looking to buy

[pezimm]

Hi guys,

Really like the Focus wagon and was devastated when they discontinued it for Australia.

I'm looking at some low kilometre units still around and I wanted to understand the differences between the model year denominations. I've seen:

MY19.25
MY19.75
MY20.25

Is there anywhere I can find the changes involved with each new model to see if there's a preferred variant?

Thanks,
Pedro.