Class engraving chests updated for new class on release

Wanted to get some solid accurate information regarding class engraving chests upon new class releases. Will the class engraving chests we have saved for new classes actually be updated and have those new engravings? Saw this post About new classes and Engraving chests - General Discussion / General Discussion - Lost Ark Forums (playlostark.com) and someone marked the response as the solution, but I would like concrete information/confirmation from a CM .

@Roxx @Shadow_Fox @Seawolf Could either of you confirm or deny please?