https://eu.finalfantasyxiv.com/lodes...a54966f48c2938
A tweet has just come out on the official FF14 Twitter
Please read the entire message at the Lodestone link above, but here's the relevant bit for those who just want the quick and dirty:
"Though it is clear that patch 5.3, which was planned for mid-June, will be delayed because of the above, we are at this time undecided as to whether it will be feasible to limit the delay to two or three weeks, or if it will be closer to a month.
We are terribly sorry for the disappointment this may cause our players, as we know you look forward to new patches. However, it is also important to prioritize the physical and mental health of our development team, without whom we would never be able to release the quality updates and features you expect from FFXIV, so we ask for your understanding as we adjust our schedule in accordance with the situation."