IBP 4.0 is the latest release which includes the following: IBP for S&O,IBP for Inventory,IBP for Supply
and Supply Chain Control Tower. Each module can be licensed separately.
Integrated Business Planning 4.0, Powered by SAP HANA – SAP Help Portal Page
For S&OP 3.0 , the latest version is 3.0 SP2. SAP Sales and Operations Planning 3.0, Powered by SAP HANA – SAP Help Portal Page
Hope this helps,
Thanks,
Raghav