I've spent quite some time covering the ever-evolving camping scene in Colorado, and I must say, focusing on new and sustainable camping experiences sounds like a fantastic approach for your latest edition. From what I've seen, a lot of new campgrounds and glamping sites have been popping up, especially those that are keen on providing unique and eco-friendly options, which align with the increasing demand for responsible travel. These places not only offer great amenities but are also often located amidst breathtaking scenery, making them perfect for your spotlight. Given your criteria, you might want to check out places like Royal Gorge Cabins in Cañon City, which offers both luxury glamping tents and more traditional cabin stays. They are relatively new, having expanded their glamping options in recent years, and they are just a stone's throw from the Royal Gorge Bridge and Park. Another notable mention is the Green Sky Yurt Retreat in Mancos, which is known for its serene setting and proximity to the Mesa Verde National Park, providing a unique blend of comfort and adventure. Both these places could potentially fit well into your book and accompanying stories, offering readers a taste of Colorado's diverse outdoor experiences while ensuring they contribute positively to the local environment and communities. Best of luck with your research – it sounds like a wonderful project!