Per Dan's post on the LOR forum:

The firmware is stable with no know issues. If you would like to try it out before general release please do so and let us know at support@lightorama.com if you have any issues.

Changes/Fixes:

Previously, an individual sequence could only last for up to ten minutes. It can now last up to 44 hours.
Previously, only certain manufacturer's SD cards were supported. A much larger variety is now supported (list to be compiled - although it will more likely be a list of unsupported cards rather than a list of supported cards)
Support for SD cards with the FAT32 file system was added.
Support for SDHC (high capacity) SD cards was added.
When a sequence started playing, in some rare cases the music and the lights would start off significantly out of sync with each other. (fixed)

Download the firmware here.