Yes, I know they can be found on the event's page. But if you look for them in the Items archive, the new yukatas are not there (For example if you search lv1-only items).

It's not a horrible big deal to me, but I like to keep myself updated and check the lodestone's archive for new items often. I am just wondering if, seeing how these yukatas are not in the archive, maybe there is other added stuff in-game that I have missed because it wasn't in the Lodestone.

I just hope they update it soon. I'm kind of OCD about these things XD...!