Just characters. Some people consider that "content" and some people don't. Think about a pencil & paper role-playing game. If they introduced a booklet with a new character class, would that be new content? Pretty much everyone would say yes. But a new character in SWGOH? A lot of people say no.
There are various reasons for this, and I'm not saying I entirely disagree with the folks who say "no" (or entirely agree with the folks who say "yes"), but you should be aware that what is content to one person isn't necessarily content to another - including you.
So Kyo probably meant characters, but to Kyno that is new content. There isn't a conflict there unless you two are defining "content" differently ... which you do appear to be doing.