Burp has a new extensibility framework. Key features include:
- Ability to use multiple extensions simultaneously.
- Dynamic loading and unloading of extensions.
- Much richer API.
- Support for Python.
- Easier extension development for non-programmers.
Note that due to the extensive changes that have occurred under the hood, this is a beta release. Also, the draft new API is subject to change in the next release of Burp, based on user feedback.