BrightSign firmware version 4.8.108 is now available on the Software Downloads page. The firmware download section is located below the BrightAuthor download section.
This firmware is compatible with the following models: HD120, HD220, HD1020, XD230, XD1030, and XD1230. Note that the update files for XD and HD players are different. Make sure to use the download link that corresponds to your player model.
Both HD and XD versions of firmware include a fix for BrightWall deployments, allowing for quicker synchronization when a slave player boots up a long time after the master player. Both versions also include support for image rotation (though this is currently only available through custom scripts).
You can view a full list of new features, fixes, and improvements by clicking on the PDF link next to each Download Now button (they are also included in the .zip file for each update).