They are talking about a "15-minute city" approach, where everything you need is within 15 minutes walk or cycle. However they confuse the issue a bit by also talking about a 15-minute drive time catchment area for visitors. Particular focus on the "Ipswich Vision Area", formed from a triangle of railway station, waterfront and Christchurch Park - also all about 15 mins apart.
From my perspective, there is welcome mention of the current disconnectedness of cycle and walking routes into and around the centre, but a frustrating lack of clarity about what needs to be done about these things or recognition that designing around car use is at the root of the problems. Similarly, although they refer to the application of the 15 min city principles currently in Paris under Mayor Hidalgo, they omit to mention that building 100s of km of cycle infrastructure and turning over iconic central routes to cycling, walking and greenery is central to their programme.