Apple Release Notes# OPENSTEP 4.1 OPENSTEP 4.2 API documentation (PDF and HTML, online) Rhapsody 5.0 / DR1 Rhapsody 5.1 / DR2 Rhapsody 5.1 / DR2 Rhapsody 5.3 / OS X Server 1.0 OS X DP1 OS X DP2 OS X DP3 OS X DP4 Public Beta “Kodiak” 577 - 10.0 Cheetah