The workshop on Softwarized Next Generation Networks for IoT Services (SIGNIS) intends to leverage communication, softwarization, and learning for provisioning IoT services, with the integration of different platforms such as cloud and fog/edge computing platforms in handling the heterogeneous and numerous IoT traffic generated in the network of 6G and beyond, along with the different network architectures such as Information- and Service-Centric Networking (ICN and SCN) including Service-Oriented Network Architecture (SONA). SIGNIS aims to bring together researchers working not only on improving the network infrastructure to accommodate IoT services but also on realizing real-time IoT services in various domains such as smart cities, smart grid, vehicular networks, underwater networks, and so on. The authors are expected to share their new ideas, latest findings, and results in the following topics but not limited to: