We are following a weekly release process for our product where we integrate both the customer reported bug fixes, internal bug fixes on priority and enhancements. These weekly releases (eg. 15010/14840/14600 etc) full binaries will be updated in our download page. After a while, in the weekly build that has successfully passed all verification / tests and has remaining bugs that are considered as acceptable, it will be moved to General Availability (GA) version (eg. 14543, 14844 etc). Over a while, these builds are rolled over and are updated into a major build. New features or critical changes are released in the major builds (eg. 15/14/13/12 etc).
We follow this process so that our users can get the required bug fixes sooner without waiting for a major build release. Whereas the major build release will be used for marketing activities & press coverage as it will have important new features in it. We assure you that all the builds available on the website & archives site for user download are all stable tested versions of the product.