No update about this yet, but they have added info about how to edit your hosts file to get access:

We're probably going to wait this one out. We considered putting up a new domain but there are implications with third party services that make it not a trivial swap. In the meantime, if you know how to tweak your hosts file use: 45.33.107.166

If you did this, don't forget to remove it again:

⚠️ If you do edit your hosts file, please remember to remove all the lines after domain is restored.

Although we typically hold an IP for a while, it can change if we update our back-end infrastructure.

Source: https://xcancel.com/itchio