I've just noticed something else from the PDF that hasn't been
mentioned yet - it appears that, from next year, single-zone
Travelcard seasons will be withdrawn. In other words, weekly or longer
Travelcards will have to cover at least 2 zones.

So anyone who uses the trick (mentioned here a few times) of buying a
one-zone Travelcard instead of a similarly-priced bus pass in order to
save on occasional tube fares, might want to think about getting
themselves an annual ticket sometime before 2nd January. Especially
since the price of bus pass seasons will go up by 22% - rather more
than the 4% quoted for Travelcards.

Well spotted. So the choice next year for a weekly is:

Bus + No zones = £13.50

Bus + Zones 2 & 3 = £14.00

Would be handy if you like using the DLR.

I've told a few people who buy bus passes about this trick and none of them
will buy the tube pass as they are confident they will not be able to board a
bus in Zone 1 (Ahhhh!).