Speaking to my manager at putney earlier he said that the first class is deffinately going and 2+2 seating is for standing purposes most deffinately and no plans to change the colour scheme or length of the 450s, plan is to extend only the main stations, putney richmond twickenham etc to run 10car 444s on them during the rush hour on readings and windsors, loop passengers will have to continue suffering unfortunately.
Your manager is wrong, just so wrong.
450 048 (the testbed) is still initially in blue livery which may or not be repainted following a successful trial. The likelihood is it will be repainted into inner suburban red.
There are plans afoot to extend a certain
28 class 450s to 5 car length for loop and Windsor services. No 444s will operate on the line - not to mention some of the dodgy platform clearances if doors are released on some of the platforms on the line. Why do you think that on Sundays 444s diverted via Staines never release their doors between Woking and Clapham yet generally eat up the path of another service (ie, the 2nd Reading from December, I think that's going in at the change...).
There is no spare stock for 444s down the line anyway - Pompey and Weymouth already have their share which eats 43 units including maintenance allowances, which happens to be the max available units currently! It would be rather pointless to put hi-density inner suburban 450s on a 1h45 long distance service, no?