[DTV]

The tall black rectangles with grey sides (one on far left of photo and on the right behind the orange fence) appear to be screens which can show stuff on the surface you can see (outside the studio). I suspect you might see shots similar to this photo on air.

They would appear to be the equivalent of monoliths for this studio, but am not entirely sure they're 'double-sided' as it were. The back of scenery is often painted black and if you look at the top and bottom of each tower, there are some technical things that don't look especially LED panel screen side to me.

Nonetheless, all appears to be shaping up to be the first decent BBC Breakfast set in at least a generation.