Is there a site that shows up to date information about which coins will be listed on what exchange ?
Just a few days or even hours in advance is fine.
If not how can I know this?
Maybe some exchange houses post this and reveal " coin X will be listed on x/x/x"
firstly you must follow the telegram group for the project which you have joined.
in there , news will always up to date from developer , include announcement of the exchange listing.
so I must to suggest you for joined any telegram group of campaign which you already participated.
hope this help