[COMPLETED] 5 Mins Planned downtime Thurs (08/06) @10 AM Pacific (5 PM UTC)
 

From the announcements thread:

On Thursday morning (August 6th) at 10 AM Pacific time (5pm UTC), we plan to take Hero Lab Online down for maintenance. We expect up to about 5 minutes of downtime.

EDIT: This has been completed.

EDIT: We are planning a quick hotfix deployment at 1:45 pm pacific (8:45 pm UTC) to fix the weapon storage lockers in PF2 and SF. We expect downtime to be 5 minutes or less.

EDIT: Everything is back up.