This catalog version focuses on runtime performance improvements on the SIMATIC 1500 PLCs. Furthermore it brings support for object-oriented function blocks (compile and download supported, no debug support yet). These changes have implemented within the package STC, which released a new major version 9. The details are described at major changes in stc 9. The big majority of updated packages in this catalog version are compatibility updates regarding STC 9.
In addition the software loader ('sld') and AxUunit-ST received function updates.