Sorry I write in english, but my French is not too good (yet). When I was in Paris some years ago, I noticed building gaps on the north side of Square Louis XVI (94 Boulevard Haussmann). I am very curious to see if they have built anything there yet? I am curious if the style will be modern or traditional. Merci.

http://img2.uploadimages.net/30341494_boulevard_Haussmann_b.jpeg

http://img2.uploadimages.net/82309294_boulevard_Haussmann_a.jpeg

I bet it'll be some ugly pastiche of the traditional style. I don't know for sure.
At the Champs Elysées, a few new buildings are more radical (Citroën, Drugstore Publicis).