I'm happy to announce that we've just released an initial beta of XIFF 3.0, our open source ActionScript library for building XMPP clients. Continuing along the path set by Sean and the previous developers of XIFF, we've moved to embrace ActionScript 3 and Flex, while adding significant functionality improvements at the same time. Highlights include BOSH support, VCard support, and redesigned APIs. Feedback is strongly requested; It has been quite a while since a XIFF release, and a lot of things have changed, so I will be interested to see how the community feels about the direction we've taken things.
Some parts of this new release are still in a transitional stage. For example, SASL support is only available for BOSH connections at the moment. As more code is generalized between the BOSH and Socket connections, this limitation will go away.