This document provides an agenda and details for a T2S UDFS Workshop on October 5, 2010. The agenda includes discussions on the scope and planning of UDFS deliveries, a presentation of the UDFS v0.2 document, and feedback from market participants. Details are given on the expectations for early market involvement in the UDFS, the roadmap and content of interim UDFS versions, and the organization of providing feedback. Market participants are asked to reserve dates for future workshops and provide comments on the UDFS v0.2 by October 15, 2010 to help improve the specification.