For those who are not in the subject: pikabu.ru/story/_4351342
So far this is only a forum, not a tracker. But the site is being developed, torrents will be. In the meantime:
To access old torrents with kat use kat.al
If you want to know where all the popular releases have gone, go here.
If you want to help with the release of the creator of kat (Artyom Vaulin), sign this petition
If you need a list of popular trackers, you are here
If you need a huge bunch of trackers, you are here