The Network Change Notice for Stage L (Christmas/New Year 2014) is now available on the
NR» website, going into some detail about the track works at the various locations.
New info (to me) is that the crossovers allowing for routes from the up and down main to the Festival Line and onward to P3, (where the viaduct is rising at the east end), will be named 'Reading High Level Jn'.
Summary section copied here, each section is described in far more detail in the document:
^ Closure of the tempoary Up and Down Main Lines between Reading Station and Whitehouse Junction (in use since Easter 2013).
^ Opening the new Up and Down Main Lines over the elevated railway between Whitehouse Junction and Reading Station.
^ Remodelling of Westbury Line Junction.
^ Temporary re-alignment of the Up Westbury Line to facilitate Christmas 2014 commissioning.
^ Realignment of Whitehouse Junction to provide access to the new Up and Down Main Lines over the elevated railway.
^ Re-opening of Platform 3.
^ Introduction of Points 8424 and 8420 on the Up and Down Main Lines at Reading East.
^ Introduction of a new junction and associated signalled routes between the Down, Up Main and the Down Reading Festival Line referred to as Reading High Level Junction.
^ Opening of the eastern section of the Down Reading Festival Line between Westbury Line Junction and a High Level Junction on the elevated railway.
^ Introduction of new signalling between Tilehurst East Junction and Reading Station over the Up and Down Main Lines
^ Changes to Platform use at Reading Station.
^ Changes to Reading West Junction.
Network Rail NC/G1/2014 RSAR 001 30 April 2014Route tables at the end of the document show all the connections between platforms and lines available in the interim period until the up feeder line becomes available. In the 6 months or so up trains from the Westbury direction will have to pass through platforms 7 or 8 bidirectionally. Last but not least P3 will re-open, with routes to and from both up and down mains via the High Level Jn as mentioned earlier.
Paul