I have seen nothing on recent (since October 25) changes to Service
update diagrams shown on screens at most London Underground stations,
http://www.tfl.gov.uk/tfl/livetravelnews/realtime/tube/default.html,
the Tubs service updates iGoogle app, etc.

1) DLR and Overground have been added. ISTR this is because a particular
TfL manager is responsible for all 3 services.

2) Screens show one column in a smaller font instead of two.

3) The most interesting change is the layout which used to show one
alphabetic list. It now shows a possibly-empty, disturbed service list
and a list with Good service or Minor delays. I think that is a useful
change, but would prefer to see "Minor delays" (up to 5 minutes) viewed
as disturbed . On screens, disturbed services are shown on a blue
background; others on a white background. Screens also show disturbances
to national rail services. Screens used to detail disturbances one at a
time. Details are now shown together. It used to take an unreasonable
time to cycle through disturbance details - particularly at the weekend.

IMHO, an improvement on balance.
--
Walter Briscoe