Hi Adam,
Sadly the govenment’s (Department for Transport) desire for secrecy has spilled over into TfL this year so that the Mayoral Decision with the new fares did not include the NR single fares as usual. I find this mind-numbingly frustrating. I hope that this is the last year we have to suffer this treatment.
What is known is that virtually all TfL fares are frozen, including the lines out of Liverpool Street. Fares to Brentwood and Shenfield will rise, as well as Watford Junction and west of West Drayton to Reading.
Single fares set at the NR rate and NR-T rate will rise in line with the general regulated increase, but exact details of rounding are not yet known. Outside zones 1-6 I expect that caps will still be aligned with the new travelcard prices. I don’t know for certain yet though.