It was said that they are going to film a Kdrama about the remarried empress. This is like a korean tv series.
Personally, I hope I get to see a occidental adaptation of it someday in my life too. This story is really good.
Here you can see the official Webtoon announcement:
Will there be a Kdrama or animated series?
There is still no information on wich kind of screen adaptation will be done, if it will be a Kdrama or animated series.
But there are divided opinions. There are people who would love a real life adaptation as a Kdrama or series production. Others prefer a animated series because they will have more freedom and a real life adaptation could be very expensive to be really good (sceneries, clothing, effects...)