You have said except do you mean that if someone was a british born and hold a british citizenship and who wants to bring a non EEA Spouse or partner
on the website they says : introducing a new minimum income threshold of £18,600 for sponsoring the settlement in the UK of a spouse or partner, fiancé(e) or proposed civil partner, of non-European Economic Area (EEA) nationality
from what i understand if they mean people who already live in england and form the N EEA area so i think Bitish people who wants to bring their spouse are not concerned by that new law