Did archive.org just get another top level domain?
If that's the case then yeah definitely it's some kind of bug. I hope they get it sorted out. They're definitely one of the good guys.
Archive.org's goal is to archive as much of the Internet as possible for the long term, like most archivists, and is backed by a nonprofit foundation. The "wayback machine" is only one part of what Archive.org does.
Archive.is has the more modest goal of taking on-demand snapshots of web pages in case they change
Though what I said above applies to both in my opinion.
Example? Archive.is is a service similar to Archive.org. In some cases you can bypass paywalls by using it. Archive.is is notorious for their anonymity.
Important to note: for their anonymity, not yours.
Do you preserve archivers' privacy? E.g. not disclose the source IP address?
Yes.
But take in mind that when you archive a page, your IP is being sent to the the website you archive as though you are using a proxy (in X-Forwarded-For header). This feature allows websites (e.g shops or the sites with weather forecast) target your region, not mine.
source: archive.today FAQ
(archive.today is the same as archive.is, they have a couple of alternate domains)