I was wondering if the warden will be counted as a boss once 1.19 fully releases and if so will 1.19+ be a new category of all bosses speedruns

Uh,okay but in pre 1.19,warden does not exist

I assume that once 1.19 releases that the warden will be included in the boss count. It will probably be quite difficult though, mainly because there isn't an easy way to locate the deep dark city. We'll only know once it releases though...

@2001WindowsXxpOfficial they literally said to make a new category for 1.19 plus