They will. They already announced a ton of Inhuman characters from the comics for this show and i don't see Marvel changing so many characters' origins all at once. And on the Ms. Marvel logo you can see what it appears to be a terrigen crystal behind her name. Also, they are already in the MCU. They were introduced on Agents of SHIELD and had a Inhumans TV Show just for them but (yes i know some people here don't like to hear it but i'll say it) there's a chance that these shows might no longer be canon to the MCU but we'll see.

Do you think we will see the Inhuman Royal Family in the show?

I don't, but it would be a nice surprise.

I'm just afraid about HOW they'll use them.

If the characters are like "Oh Kamala is an Inhuman, nice." Then everything will be just fine.

But if they are like "Inhumans? What the heck is that?" Then everything will be just wrong.

@AntIsBack yeah this series really will be the make-or-break moment that will finally put an end to the endless debate about Marvel Television Shows' canonicity. Accoarding to Agents of SHIELD, Inhumans are around for a long time and are of public knowlegde since 2016 or something like that. Re-introduce them in the MCU contradicting something from the Inhumans lore from Agents of SHIELD and treat them like a new thing to both us and the in-universe public would be denying Agents of SHIELD as canon. Personally i hope all the shows stay canon except for Inhumans and maybe Helstrom.

They already introduced it in Agents of S.H.I.E.L.D. And inhumans isn’t Canon so that doesn’t count

Its already been confirmed that khamala is an inhuman.

Also, Agents of SHIELD is MCU.

@OmegaBlue1 Inhumans is canon.

Both shows have always been MCU canon, but it's probably that Marvel Studios will not use the caracteres and stories again (Inhumans show is the most likely to be rebooted).

I think they will probably reboot the Inhumans.