We know a lot of people have been patiently waiting for the impending 2.9.1 release. We did have it scheduled for this week, however, during final regression testing we uncovered some issues that we need to address before the final release.
So, we have re-targeted the Snort 2.9.1 release for early next week to give us time to fix the issues and re-test everything. As always, we'll publish a blog post about the release when it comes to fruition and we'll be following that up over the next few weeks, with several blog posts regarding the new functionality and features.
Thanks for your patience and for using Snort.