In message , at 12:20:03 on Wed, 12 Oct
2016, Basil Jet remarked:
Just curious - does anyone know what form the architecture will take, will it
be like the JLE, crossrail or something completely new? Also I presume the 2
new stations will have platform doors too which I imagine will mean some new
kit on the trains - unless its already installed.

Just a thought... one of the Northern platforms at London Bridge is as
new as the Jubilee extension but doesn't have PEDs. Although perhaps
that is because the existing tunnels could be used for ventilation, so
adding PEDs would not have saved anything.

The ventilation there is partly via the old C&SLR tunnels, but also the
original lift shaft. I've always wondered if that has survived the
recent large amount of rebuilding at ground level (it's outside the
footprint of the NR station).
--
Roland Perry