@MGI is currently working on updating mirror. If he needs help, I'm sure he'll ask for it. The normal client has been up since ~15 minutes after the update.
It was never offline since it was updated within ~10 minutes of the RS update. Mirror still needs to be updated though.
I'm assuming someone just marked it offline by mistake.
Good evening everyone,
We have updated to Java 8. The latest client v2.3.63 is compiled with the latest Java as well as the SDN.
Regards,
The OSBot staff