Hi Oscar,
Production editions of PowerServer (Workgroup and Enterprise Editions) don't follow the same versioning naming scheme as PowerBuilder and PowerServer (PB Edition).
Currently, the latest version of PowerServer Workgroup and Enterprise is PowerServer 2019 build# 1988.
The version right under this one is PowerServer 2017 build #1756.
If you want to be on the latest version of PowerServer 2017 (Workgroup or Enterprise), then make sure you're on build #1756.
You may also choose to update your PowerServer (Workgroup or Enterprise) version to PowerServer 2019.
Downloads for production editions of PowerServer (Workgroup and Enterprise) are not located on the User Center. Please contact Appeon's sales dept for download links.
Latin America: latam@appeon.com
USA: sales@appeon.com
Cordially,
Mariano C.