Exactly. Changes in this patch mainly class changes cannot be found in any guide because until today all websites even the official ones are focused on D2 classic (when I say D2 classic I mean the unremastered version). New runewords as well as class changes such as the assassin’s elemental charges consumption cannot be changed from these sites as they still deal with D2 classic and not D2R.
There should be some guide site (official or otherwise) just for D2R as of this patch