I wonder which exchanges are supporting this hard fork?
You won't know, and nobody will know until it gets announced officially.
I know from the Bitcoin Private project, that teams are not allowed to even discuss with which exchanges they're in talk with. There are non disclosure agreements when it comes to exchanges listings and fork support.
I asked on their telegram and it seems like they are quite "hush hush" about it, stating that they assume big exchanges will adopt them eventually (I guess because we people will demand our free money, right?). These exchanges will have to take a hard look into their wallet & code, which means that it will not possible for them to list MoneroV prior or really close to the fork (this is my assumption).
About non-discolusers etc, It appears that they are trying to do this as private and most decentralized way, Satoshi style

So I'm confused to about how it will go for them in convincing these exchanges.
All in all seems like a great project and a very big event to wait for! Exciting for all Monero hodlers and lovers
