There's no single gene for beauty, intelligence, athletic ability, or other characteristics we value. Rather, these traits are the results of complex interactions of many genes and possibly developmental factors as well. Editing for beauty is many decades away, if ever. However, editing for specific disease-causing mutations is already starting. Experimental subjects apart, it will almost certainly be available to the rich before anyone else--just like all other forms of expensive medical treatment. However, technical advances are likely to lower the cost and make it available to everyone eventually, at least everyone who has access to healthcare.
Given the fuss that was created by the Chinese case, I'm not sure why Gates thinks we are not paying attention. A lot of attention has been paid to the ethics of gene therapies. We don't have all the details but it appears that this guy violated just about all the rules there are. His work has been stopped and he may be facing serious punishment. The case was especially egregious because it involved editing the germ line, meaning that the results will be passed to future generations. While that might someday be beneficial in eradicating some forms of disease, for now it is generally considered too dangerous to pursue in humans.