Yes they have in one of the news articles.. listed here: https://na.finalfantasyxiv.com/lodes...0e73ebb986a6ee

"In preparation for these predictions, we optimized our servers ahead of the expansion’s launch in order to increase login caps. On the other hand, due to the ongoing global shortage of semiconductors we have previously mentioned, we were unable to add new Worlds before the release of Endwalker. The addition of new Worlds will still be considered as we procure the necessary server machines."