Rtree 0.5.0
Rtree 0.5.0 and spatialindex 1.4.0 are out. The major new features are:
Better platform parity
Efficient bulk indexing
Arbitrary dimensionality
Improved performance tuning
See Howard Butler's release note for details. The spatialindex lib is beginning to develop a user community of its own. For them, the major new feature is a C API (also used now by Rtree).