Over the last two years, we've invited our Pressero customers to upgrade from v5 to v6. We are now positioned to retire v5 and move all final accounts to v6. This will happen during our normal maintenance window on the evening of February 24-25, 2018 (note that this is a new date from our previous announcement). This does not include v5 API which we will continue to support for the immediate time.
If you are currently on v5 there is nothing you need to do. But you will want to review this document so you know what to expect once the switch is complete. http://support.aleyant.com/kb/a658/welcome-to-pressero-v6.aspx#
Please create a support ticket If you have any questions or concerns.