GigaOm has the story:
The German company for the first time told GigaOM about its plans for GeOS, an operating system that allows developers to use OSM commercially. This is important because it provides a cheaper open source alternative to Google Maps or other platforms. GeOS provides a stack of APIs that reduces the complexity of working with raw map data, enabling developers to easily write apps built off the OpenStreetMap platform. Skobbler, which was created as a spin-off of Navigon in 2008, plans on talking about more about its plans at the Where Camp Berlin geo conference on June 22. It will start working with select developers this month, offering maps for both mobile and web usage, and is expected to open full public availability next year.
The article mentions MapBox, but not Cloudmade, which I thought at one time would be the leader in offering such a platform. Perhaps it was too early?