Enfield Independent published an optimistic story on 19th June

This is based on a TfL Press Release

As the press release makes clear

Notes to Editors

• The contract is for 45 trains to be introduced from 2018;

• 31 new trains to replace all the old Class 315 and Class 317 trains on the Overground West Anglia and Romford to Upminster routes;
• 8 new four-carriage trains for the electrification of the existing Overground route between Gospel Oak and Barking;
• 6 new trains to bolster services on other Overground routes

• The contract also gives TfL options for more trains to meet future demand and provide potential frequency improvements. The contract between TfL and Bombardier covers the manufacture and maintenance of a new fleet
• The Gospel Oak to Barking route, which is already part of London Overground, is being electrified by Network Rail and due to be completed in 2017. The new four carriage electric trains will run on the route after electrification has been completed, replacing all of the two-carriage Class 172 diesel trains, and will provide improved journey times and more capacity.

The report in Railway Gazette reports:

UK: Transport for London announced on June 19 that it had selected Bombardier Transportation to supply 45 four-car electric multiple-units to operate London Overground services. The order includes an option for up to 249 additional cars, to be used for train lengthening and possible future extensions of the Overground network. The £260m contract is subject to the statutory 10-day standstill period before signing. CAF, Hitachi and Siemens had also been shortlisted for the contract.

The high-density air-conditioned trains with wide gangways are to be built at Bombardier’s Derby factory for entry into service from 2018; 31 will run only on 25 kV overhead electrification and the rest will be dual-voltage to enable them to run on third-rail power supply too.

Eight trainsets would be used to operate the Gospel Oak – Barking route, currently operated with two-car diesel multiple-units. Electrification of this route is due to be completed in 2017.

A further 30 (train sets) would replace the fleet of Class 315 and Class 317 EMUs on the West Anglia routes from Liverpool Street, which were transferred to the Overground operating concession on May 31,

One (train set) would be used on the Romford – Upminster line.

Six EMUs are to be put into service on the remaining Overground routes.

Note to readers: The original Expression of Interest was announced on 9th April 2014