It came up back around Australia – people complained that it was too artificial because only an attacking driver could use it, and only in a set area of the circuit under set conditions. A few people were calling for DRS use in the race to be unrestricted, like in qualifying.
I can not find any details on where the DRS zone is for this weekend’s GP.
The FIA generally don’t release it until the Tuesday or Wednesday before the race. It’s only when they’re doing something different – like having two DRS zones – that they’ll announce it well in advance.