Microsoft made available for public download on Tuesday the "Internet Explorer 7.0 Beta 2 Preview" build of its next-gen browser. This new build (which leaked all over the Web last week) is aimed primarily at Web developers and includes new RSS- and AJAX-related features. If you didn't get enough of the leaked screen shots last week, here are some more IE 7 Beta 2 Preview screens. eWEEK Labs says the latest build shows a lot of promise and a lot of improvement, vis a vis Mozilla and Opera. The IE Team blog folks are posting lots more of the gory details on the new build. You can test the build yourself by downloading the IE 7 Beta 2 Preview build here.