In this talk, I will provide an overview of the current, and currently foreseen, development activities at the NOVA Sub-mm Instrumentation Group (University of Groningen), mostly in the light of the ALMA 2030 Development Roadmap, but also for future ground-based telescopes. The group is involved in fundamental R&D spanning from solid-state quantum detector physics to optics design and instrumentation concepts, as well as in the series production of instrumentation. Among the main activities, there is an ESO-cofunded study on the feasibility of upgrading the existing ALMA Band 9 (600-720 GHz) receivers to sideband- separating operation, with a bandwidth four times as wide as the current ALMA bands. Additionally, following the successful installation and testing of the ALMA Band 2 (67-116 GHz) pre-production receivers, our group is advancing into the production phase of a full set of receivers, one for each ALMA antenna. In addition to these efforts, developments include a 210-275 GHz mixer (Band 6) primarily for LLAMA in Argentina and front-end optics design for the African Millimeter Telescope in Namibia.