Siebel 18.10 Update was released
The Siebel 18.10 Update was GA released.
(And this includes fixes for the previous bugs that made 18.8 and 18.9 Controlled)
Some details on the new features are provided in this Blog post.
To locate that in MOS 'Patches&Updates' please use - Patch 28745509 .
Also the Update Guide and Release Notes are available in same (Doc ID 2382435.1).
And Siebel DISA version 2.18.10 is also GA - Patch 28738876 should be used for that; and Siebel Mobile 2.18.10 apps as well for Mobile implementations (- from the preferred Application Stores)
Hope these help.
(Please ensure marking Community posts as helpful or correct if case to allow others easily spot the most relevant details)