Likely someone trying to re-use the domain name. The previous domain owner preferred to close the service, he was running it with his own money to cover expenses IIRC. If he decided to reopen his service he would have already announced it here.

I have no idea why someone would want to create a new mixer but using a name already used before. After using all TLDs possible to set up scams, they're probably now moving to reuse domain names of closed mixers who left without scamming users.