[DTV]

All regions sets have been updated on the first day of a new look and no delays were needed at all.

This isn't without precedent, though. The September 2002 new look for BBC English regions (excluding London and South East) took place on one day, and that included repaints and new carpets for all. In April 2008, many regions similarly adapted their existing sets to match the new colour scheme for launch on 21st April (the biggest single-day relaunch of BBC News ever). LED videowalls do make things easier in this respect (and cheaper), but we're only talking partially new looks (as per 2002) at best.