Yes, Soi Gonzo is closed down end of May for construction work but I don't know how long time they need for the work. 2-3 months I guess I heard before somewhere.
I may take a peek tomorrow and find out how the work is proceeding...
Soi Gonzo looks like a skeleton building, lot of work left. The style reminds me of soi eric bars but it's hard to say what the final bars will look like in this early stage.