In the survival MMO H1Z1 tomorrow, Thursday, April 30th, is a patch-and-clean day. The servers will be wiped, and the world will end.
It will probably be around noon when the world of H1Z1 dies again. The new patch wipes servers and the world. It is supposed to be quite a large update: It brings female player models, first-person battle royales, and the Steam marketplace. Additionally, some typical minor changes to the interface and crafting models will be made. They are also offering a t-shirt for this server wipe.
The most noticeable change in H1Z1 will surely be the female models. Bb then there will be a bit of variety on the servers. Until now, there was only one player model, admittedly it was recently replaced with a better one.