@mattcalvium StopPoint is an amalgamation of different datasets so it depends on how often the root source is updated. Sources are referenced in StopPoint so you may see StaticObjects or LRAD for example. The StaticObjects API task runs weekly. The source data is updated as and when we receive updates from our colleagues in London Underground. LRAD is a very old dataset of accessibility related information. It was last updated in 2014. We are working on developing an up to date and improved dataset on the accessibility of our network, date TBC. In the meantime, the most up to date sources are from Journey Planner (/Journey) and our PDF maps https://tfl.gov.uk/maps/track/tube.
We are also planning on improving access to all our open data including publishing clearer information on when the data was last updated. We’re hoping to start rolling that out this year.