1. We are on 14s version of our Sourcing, Contracts and SIPM products.
2. 15s version is under development
3. 14s release had integrations introduced for Ariba Sourcing and ECC. 15s will see the same for Contracts.
4. 14s integration details can be found @ https://knowledge.ariba.com/AC_web_page/1,,159275,00.html.
5. 15s integration is under development and I can talk to you in detail on this if required.
Hari Babu