Yup, most likely April or May if they are too lazy. Upgrade sales are still a mystery
They technically didn't kill the physical damage dealing part of the Dekan as you can read on the Zhen mastery it adds their main stat as additional damage making them somewhat useful in close combat. DS Fast Shadow lasts 5 mints of atk spd so I would say they will be useful as Caters and Melee damage dealers. Their Crit damage will be fking OP something like Halfelfs new 700% Fatal.