Good news! We've managed to work out what was going on with the duplication glitch and we've written a mod that should allow us to guard against the exploit that we were being hit by. Del has decided that we need a bit more time to update to 1.10.2, so he will be opening 1.7.10 again soon. I'll let him give the details as to the 1.7 servers.
As for 1.10.2, we're still going to go ahead with this soon, but we've got less of a reason to rush. We want to make it as good as possible for you guys, but now we feel we can give you the infinity experience again, we can spend more time on 1.10.
Del will hopefully follow with more details soon.