This post is already a great idea by being cooperative with the community. My ideas:
-Some details, pictures or videos of the inner workings of the operation. I heard some buzz about how people were impressed by something that was released. I haven't even seen it myself but I'm still aware of it.
-Solicit member product feedback. Create an occasional special edition, limited edition, or collectors edition light.
-Occasional giveaway to generate buzz.
-Some prerelease teasers to generate buzz. Whether it's information, a picture, or just a hint or riddle. It's fun.
-If there are any complaints even directing someone to the right webpage or phone number generates goodwill. It makes it seem that someone is listening.
-Advertising and promotions. I'm interested in hearing about seasonal offers on this forum.
-Technical information & knowledge. Whether it's about a specific product, how measurements work (ANSI), product demonstration videos, general industry learning. People here are interested.
-Beamshot comparisons of your lights. People like to compare beams and tint when deciding on a specific product. Maybe a picture of multiple lights together to get an idea of overall size.
-If you have any interesting stories of how people use your lights those are lots of fun. Or invite people to tell their stories.
-Ask people to have a discussion about their favourite product in your catalogue, what and why they like it. This could be valuable marketing research.