Ye olde Main Site will be placed in semi-stasis on Thursday, per this letter from the host:
Our technical operations team is constantly working to improve our services. As part of these improvements, we will be moving your MySQL databases to a new server while upgrading the MySQL version to 5.6. This migration will take place this Thursday, the 1st of October, starting at 10AM PDT. Migrating the databases from their current location will take all day to complete, however you will only experience 5 to 10 minutes of downtime when your databases are actually moved. During this maintenance, please try not to make any updates to your site (it will just prolong the migration). We apologize for any inconvenience this may cause!
I expect this place will be running, or at least ambulatory.
The current stable version is 5.6.26; 5.7.7 is out as a preview release, but the host has a rule about installing preview releases, and I don’t blame them.