Don't know if anyone has noticed - while browsing the GW online store, I noticed that the cityfight RoB board has moved to last chance to buy, at least in Germany and the UK. US shows a 404.
I'm a bit surprised, because the AOS boards have remained the same. And as far as I understood, the new board sizes are recommendations for minimum size not sizes to play the game set in stone.
After the Armies on Parade posts, where GW recommended getting the new cardboard boards as a basis for AoP, this might come as less of a surprise for some. I, for one, don't like the change to cardboard boards - it lacks texture and a "proper" feel.
Good thing I own 4 of those RoB segments, which I bought for AoP projects in the past.