For listing in big exchanges, usually trader community will discuss, or maybe started with coins that sent to exchange's wallet. I think something like that not very hard to get because some trading group or maybe trading signal channel. Mostly we can find it in telegram.
There are a lot of Telegram groups discussing new coins right now and I'm also following them to get the latest information.
Telegram is the best place to find the latest crypto information and Twitter is also a social media that talks a lot about cryptocurrencies.
Rumors about listing new coins on major exchanges will continue to circulate in various groups.
Yeah lots of them and knowing this platform is the main medium when it comes to announcement or spreading out information but you should really be careful on dealing with those groups because aside from those legit information there are still lots of scam and frauds that do exist on to those market which simply means that you would really be needing to be careful and be watchful with those scams and just
filter out those things that do share up with legit information and i would say that this isnt something simple that you could deal with.