The City of Uster GIS centre has made aerial imagery and street data available for use in OpenStreetMap. The imagery was captured in 2008 and has 10cm nominal resolution. Access to the data is provided via the cities WMS server.
We thank Mr Neumann from the GIS centre for the cooperation and Michael Spreng for establishing contact..
The imagery can be accessed either via the City of Uster WMS or via the experimental SOSM mapproxy server. More information can be found in the Wiki.