You can find a revised Window Replacement Schedule here. (You must be logged in to see the link)

There have been recent delays and unscheduled installations because of window delivery problems caused by the manufacturer. These problems now appear to have been resolved and the schedule should shortly return to a more predictable form.
The revised schedule is now colour coded:

• Green means the windows have been installed.
• Yellow means a confirmed start date and the notice has been sent
• Red means a tentative start date with window delivery not confirmed.

Future updates to the schedule will be weekly.