When there is news or instructions on how to get your coins?
The NEO Classic fork is planned for 24th August, 2019 (20:00 GMT) thats when a snapshot of the NEO network will be taken. At this point, every NEO holder will receive NEO Classic tokens at a 1:2 ratio. For instance, a user who holds 100 NEO will receive 200 NEO Classic after the fork.