There was a report a week or so ago that TfL are likely to bid for the
East Anglia and South Eastern rail franchises, not just have control
of the London bits. http://www.mayorwatch.co.uk/tfl-seek...ises/201221325

The report says that "Both franchises will be awarded by the
Department for Transport and TfL is hoping to beat commercial train
operators in order to bring the London Overground experience to the
routes." The thread above doesn't breed confidence...

As one of the commenters on the Mayorwatch says, few seats and no bogs
London to Norwich doesn't sound fun.