Paid a visit to Derby station at lunch time on Monday, 26th March.
Since the video was taken by martinr1 on Saturday, the steel frames for the two lift towers have been erected, together with some of the tubular columns which will support the walkways between them, the stairs, and the existing footbridge; a trailer loaded with more columns was in a compound. The barrier line has been moved closer to the Pride Park entrance - the lifts/stairs to the new platform are more or less in line with the barrier's former location.
Apart from where there are gaps adjacent to the two haul roads, the platform walls are complete, and in-filling with hardcore has commenced. The shape of the new platform differs slightly from the plans deposited with Derby City Council; the face of "platform 7" seems to approximately match he length of the canopies, and recesses have been constructed at either end. These are not shown on the plans which can be viewed on the city's website.
I don't know if it's an optical illusion, but when the new platform is viewed from the overbridge what I presume are the bases for the columns which will support the canopies seem to be very close to the platform edges; by observation, there seems to be insufficient space for people with luggage to walk platform-edge side of the columns without coming into contact with the tactile strips I expect will be put in place.
It's not very clear from what I could see, but it does look as if the new signal controlling the northern exit from the 'pilot line' has been allocated the number DY459; I THINK this was also carried by the signal it replaced, controlling the northern connection to Etches Park depot.