The latest TfL board papers are still listing January 2010 as the date
for extension of PAYG to National Rail.

There are only 15 stations left to install validators at.
Apparantly one issue is switching off ITSO acceptance at the Waterloo
gateline.

See page 8 of http://www.tfl.gov.uk/assets/downloa...ort-Oct-09.pdf

The TfL Business plan also mentions that acceptance of PAYG on river
services will start in November, and that ITSO, Visa Wave, and
Mastercard Paypass cards will be accepted by 2011

See page 81 http://www.tfl.gov.uk/assets/downloa...11-2017-18.pdf