To all GeoGebra fans out there, the GeoGebra 5.0 Beta release is now available. The most prominent feature of GeoGebra 5.0 is its 3d environment.
You can download the webstart version here and the portable version here. If you find any bug, you are welcome to report it in the GeoGebra 5 Beta Forum.
Erratum: The versions above are JOGL2 test version (will be removed soon). The correct link for version 5 is here.