Trackr.moe, the best place to keep track of manga releases had an announcement of being shut down. I was using it daily to keep track of over a 100 series across multiple sites and read the latest releases. So I knew if nobody would make a replacement, I would have to be the one.
I also noticed that a lot of people were, just like me, sad to see it die and even suggested to pay for hosting and such, to keep it going. That gave me that extra validation that there needs to be a replacement, with that much demand on display