The programmatic drawing engine has been reengineered to support many new features, such as circular visualization, new face positions, extra face properties, full SVG support and more!

ETE 2.1 includes a webplugin module to generate interactive WEB tree images.
ETE 2.1 adds support for both NexML and PhyloXML formats.
The new PhylomeDB v3 API is now included
Backward compatible with old ETE 2.0 scripts