Kennington's Zone Change Messes with the Tube Map

The Northern Line Extension is coming with two new stations - Battersea Power Station and Nine Elms, and because they're being placed into Zone 1, Kennington Tube Station has already changed from a Zone 2 station to a Zone 1/2 station instead.
This means that fares have changed, which is fine ... but how is this going to be displayed on future maps? I think we may have a problem with that one ...
I have a Ko-Fi page where (thank you!) if you'd like to support me/the channel: ko-fi.com/geof...
TfL have already updated their website map with the new Kenningon change: tfl.gov.uk/map...
You should also read Diamond Geezer's blog about the Kennington Change: diamondgeezer....
And see also the excellent Oyster-Rail website where Mike has two articles on this:
Kennington Rezoned - oysterfares.co...
What to do about Vauxhall - oysterfares.co...