From the press section on the BA website:
Changes include a new dividing screen made of an innovative material, Lumisty, which allows cabin crew standing in the aisle to see through it, enabling them to identify whether customers need anything. However, to those sat in the seat, the screen will appear opaque, providing them with privacy from the customer opposite.
Is it just me or does this sound a little odd? You, the passenger, think you are enjoying privacy in your seat as the screens are opaque so you can't see out, but in fact those in the aisle can see in.
Apparently this stuff (see details
on Lumisty explanation site here) is transparent at some viewing angles and translucent (frosted) at others. Perhaps someone who goes to one of the "see the new Clyub World product" sessions can enlighten us on what it's actually like.