Adobe Systems has released a new public beta of its Adobe Flex 3 software, the cross platform, free open source framework for creating rich Internet applications (RIAs), notes MacUpdate. This major functional release adds rich new UI capabilities, enhanced developer productivity, desktop deployment and enterprise testing and performance tools. The Flex 3 public beta also marks the first significant deliverable for the open source Flex project, beginning with the availability of nightly builds and a public bug database. Latest released notes on this update is available from the site. The release of open source Flex under the Mozilla Public License will occur in conjunction with the final release of Flex 3, currently scheduled for the second half of 2007.