Modern Railways mentions that the DLR are considering possible extensions to
Farringdon and/or Charing Cross.
Both of these could be very interesting.

No details are given, but I'm guessing that the Farringdon extension could
run in tunnel to Moorgate,
then take over Thameslink's branch to Farringdon.
This will be closing in any case when Thameslink 2000 is built.

The Charing Cross branch could run along the original planned Fleet/Jubilee
line route via City Thameslink and Aldwych,
and take over the abandoned Jubilee line tunnels and platforms at Charing
Cross.
I understand that provision was made for Jubilee line platforms when City
Thameslink was built.

Peter.