The Humanitarian Data Exchange (HDX) has launched a data access API.
Although HDX has an existing API for the data catalogue (through CKAN), it only supports interaction with metadata. HDX HAPI enables direct access to the data itself.
I can see this being really useful for automating the way our team provides data to colleagues - we can now make sure we always have the most recent data in our ArcGIS online.
More info on the landing page: https://data.humdata.org/hapi
Launched at the same time, HDX Signals also looks cool - automated messages when a significant change is detected in a dataset update.