Ariba 14s release - Features ?

Hi Ariba Team,

We have used Ariba 13s in our Ariba - PI - SAP S/4 integration solution. With the new release, will there be additional fields coming in the Ondemand wsdls ? Do we need to redo the complete development?

Request you to please provide some information on the features and how it could impact the current integration solution in place.

Thanks

Varun