RC6 includes lots of changes.
The most significant is the inclusion of a new theme--Outreach. Outreach is an Adaptivetheme sub-theme and is fully responsive. Adaptivetheme also provides lost of customization options so users will be able to tweak it to their needs through the UI. We've added some colour combos but users can also easily select their own. This is now the default theme when installing Open Outreach replacing Granada. Eventually we want to rebuild Granada using Adaptive Theme but until we do, we'll still leave it included (as well as Mix and Match and the Fusion base theme) to accommodate existing users. Please note: to get Outreach to display correctly you need to submit its form, so be sure to visit the Appearance page, makes any changes to your settings and save.
Debut Media needed some clean up work—we removed a dependency on Styles, made the carousel responsive and tweaked the media page view so that images need to be published. To get rid of files you don’t want to display, set as ‘unpublished” on the files administration page. See the release notes for the technical details of issues addressed.
Changes to Debut Highlighted addressed the desire to make the slideshow responsive. To do so the dimensions of the image have changed and for existing users images may need to be reloaded at larger dimensions. See the release notes for the technical details of issues addressed.
Debut RedHen also needed some fixes around permissions and filtering. See the release notes for the technical details of issues addressed.