Hi Wen,

We use a continuous integration development model where patches are merged as soon as they have passed testing, so the development team have access to the very latest build version, but we do not make this available until each monthly release.

There is a release every month for all branches where bug fixes, security issues and sometimes minor improvements have passed testing and integration. This is usually sometime around the 18th-20th of the month depending on how the days of theweek fall - we normally release on a Tuesday. Monthly releases are announced here

As you know, Seedlings is released before the major release, so that partners and subscribers can get familiar with new features and provide feedback before the final release. And after each major release there is usually a survey and round of discussions where the community can weight which features they would most like to see.

There is no "roadmap" as such however a list of high priority features is usually maintained here

Features that are on our radar but are still in the discussion stages are listed here