One seismic changein the horse world since 2000, when The Horse-Lover's Encyclopedia edition 1 came out is the rise of Natural Horsemanship (NH). Back then it wasn't even an entry, and 'round pen' wasn't a verb. Today NH is huge, with popular clinicians like Pat Parelli having enormous followings, and almost everybody has some idea of how to do 'round penning.'
NH has its critics, too, many of them among what may be the next tidal wave poised to sweep the horse community. It's difficult to put a name to this group. In fact, many of those I conceptually place in a single bucket would resist being included with some of the others, possibly with good reason. I'm open to hearing arguments about that, but here's how I see it at the moment.
There's a movement toward softer forms of training, and in some cases, keeping riding completely voluntary on the horse's part. Clicker training; groups like Empowered Equestrians, who use and understand terms like +R, and aspire to train horses using only +R methods. People who will not ride a horse unless he clearly signals his desire to be ridden.
There are research groups like ISES (International Society for Equitation Science) and universities studying equine cognition and behavior, and who have brought us fascinating new info like the blanket study, and new insight into how horses see us. (Hint: wipe that frown off your face before you walk into the barn!).
There are people who love horses, but have no interest in riding, who are coming out of the shadows and claiming their right to be horse-owners on their own terms. Some of them 'just' feed and love on their horses. Others play with them (careful!) and some take part in sports like Equine Agility. This dovetails with another group who would like to compete in a mild sort of way, but don't want to truck horses anywhere. Some of them participate in contests where you set up and video, or score, a test, then email it in. (Agility, Mounted Archery.)
Then there are the myriad of sports that expand our idea of what a good horse can do. Far beyond the categories of my youth--English, Western, trail, racing--these extend into Iberian riding traditions with doma vaquera and Working Equitation, expand ranch horse concepts with Extreme Cowboy competitions, and move way past the old trail classes.
It all feels like its moving a lot faster than it used to. It's much easier to start a new sport, spread the word about it, get in touch with like minded folks, and even compete remotely. Our idea of horsemanship is getting gentler, more nuanced, more scientifically informed, and more multi-cultural.
I tried to touch on as many elements of this as I could in the new HORSE-LOVER'S ENCYCLOPEDIA. But we had to be brief, for reasons of space, and we still ended up with a three-pound book! Still, it makes a good jumping-off point. Mounted archery? Who even knew that was a thing? Except the Mongols, the Scythians, and our remote Indo-European-speaking horse-riding ancestors--and now, the practitioners of this multi-cultural new sport. Korean, Hungarian, and other forms exist, there's a serious degree of costume involved, and the process of teaching horses to tolerate having arrows fired from their backs leads to calm and a high degree of control. It's all really exciting. Can't wait to see where horsemanship goes in the next fifteen years.