The download contains all the airspaces that are also visible on the map. Except zones like airfields or heliports that are replaced by local agreements (black hairline zones on the map). There are two files, one for airspaces and one for wildlife zones available.
Includes CTR, TMA, R- and D-areas, airports, heliports, etc.
The SHV currently doesn't provide any obstacle data. You can find an obstacle database for download on XContest. There, click on "export" and choose "XCTracer" or "GeoJson" (obstacle data is not available for "OpenAir").