This document is an incremental update of the deliverable D2.1 - Initial Scenario Description and Requirements [1], which introduced the outcomes of the initial use cases description and requirements elicitation work carried out in the H2020 DEDICAT 6G project. The goal of this deliverable is to bring up to date use case stories and requirements, as well as to introduce a functional decomposition of the use cases. These use cases are designed to validate the main objectives of DEDICAT 6G, which is to design a smart connectivity platform that is green, highly adaptable, ultra-fast and dependable/resilient for securely supporting innovative, human-centric applications. A detailed definition of the four use cases is given, introducing multiple stories to illustrate the expected workflow using the DEDICAT 6G platform, and to remark on the technical, social, and financial perspectives which are all relevant in each use case. Four use cases are proposed in DEDICAT 6G: Smart warehousing: It covers the trustworthy automated real-time monitoring, surveillance, and optimized operation of a warehouse; Enhanced experience: It provides live streaming applications that use enhanced data overlay in 360º, Augmented Reality (AR) applications and Virtual Reality (VR); Public safety (Public Protection and Disaster Relief, PPDR): This aims to showcase how resilience of critical communications can be enforced through DEDICAT 6G solutions and how human security can be protected in extreme situations; Smart highway: It describes how connected and autonomous mobility can benefit from Beyond 5G (B5G) and 6G connectivity. DEDICAT 6G use cases are presented from the standpoint of several relevant actors, contextualized in selected use case business field. Gaps are identified, and a set of requirements considering existing technologies and trends are extracted. A relationship is made between the context view and the functional view of the project and finally, proposals on how to fill these gaps are discussed, envisioning the expected functionalities of the DEDICAT 6G platform. This deliverable focuses on the design and implementation of technical innovation work to provide a basis for multiple work packages: WP2 where the architecture is detailed and WP3, WP4, WP5 where technical enablers of DEDICAT 6G are designed and developed, and WP6 where demonstrations will be carried out to evaluate performance and validate DEDICAT 6G architecture and solutions.