xxmai (official Volunteer Staff) says that they're working on a new submissions and approval process, so hopefully that will help speed things up.
In the meantime, what we users can do is to be really careful with our submissions so they are as easy as possible for mods to verify and approve. This means getting our information exactly right with evidence links to reliable external sources.
There is far too much to take in and remember, but try to meet the requirements in here as best as you can. https://kisskh.at/discussions/support/17285-guidelines-editing-and-submitting-new-dramas-movies-and-actors
If this is specifically about newly announced titles and only that, there's a process for that. I'm not involved in it so I won't comment. But it will likely speed things up if it's not a ton of people adding partial or poorly evidenced submissions to the queue.