So, there was a boatload of info dumped on Discord in the last few days, but one piece of information I know a lot of people here will like.
When MC starts visiting other kingdoms, Eliza is going to any that MC goes to; she won't be staying home. She's also one of the few companions we have so far that can withstand the extreme conditions of the levels of Hell.
There's also going to be a choice sometime in Season 3 where you can pick Eliza as your solo LI, even if on a harem path until then, and going solo with her will have its own ending and epilogue.
For those wondering, Eliza is the canon LI, but major LIs include Eliza, Rin, Alice, Luna, Amelia, Queen Merida, Pearl, Kira, Echo, Maia, and Diana (though this was from memory, so he may have forgotten one or two).
Lastly, September is when we'll be returning to the girls in Luxenford.