Sweetpea Mama

That's a good question and I wondered about it too. The actress that accepted the role, Uhm Ji-won, is a talented actress. And from reading the broadened synopsis from Dramabeans today, I think Uhm Ji-won can bring a lot to this role. Guess, we will have to wait and see to be sure.
http://www.dramabeans.com/2017/06/sbss-falsify-finds-its-female-lead-in-eom-ji-won/

Lee Yeon-hee and Yeo Jin-gu (Circle) are considering lead roles in drama "Reunited Worlds".
http://www.dramabeans.com/2017/06/yeo-jin-gu-lee-yeon-hee-up-to-become-friends-turned-lovers-in-reunited-worlds/

Trailer and behind the scenes videos, article about characters and synopsis here:
https://www.dramafever.com/news/the-best-hit-preview-and-behind-the-scene-videos-are-about-to-make-hump-day-all-better/

Newest blog.
http://www.dramabeans.com/2017/05/yoon-shi-yoon-shows-off-his-idol-genius-in-the-best-hit/

Writer Kim Eun-sook Goblin, Descendants of the Sun. PD Lee Eung-bok Goblin, Descendants of the Sun.
http://www.dramabeans.com/2017/05/goblin-writer-kim-eun-sook-returns-with-period-drama-mr-sunshine/

From writer Kim Eun-hee: Signal, 3 Days, Phantom, Sign, Harvest Villa.
PD: Kim Sung-hoon Tunnel, A Hard Day.
Adaptation of manhwa Country of God.

She accepted.
http://www.dramabeans.com/2017/05/lee-bo-young-to-become-mother-for-tvn-remake/

Filming reportedly scheduled to begin in October 2017.
http://www.dramabeans.com/2017/05/lee-bo-young-to-become-mother-for-tvn-remake/

I certainly hope so. I really enjoyed "Clinic On the Sea".

Lee Yeon-hee is positively considering the lead role.

Lee Yeon-hee (Hwajung, Miss Korea, Gu Family Book) is positively considering the lead role. Creative team reunites: Writer & PD of "Beautiful Gong Shim", and "Girl Who Sees Smells".
http://blog.asianwiki.com/korean-dramas/lee-yeon-hee-offered-lead-role-in-sbs-drama-series-reunited-worlds

I was wondering the same. Have to wait and see unless we get more details shared. I'm keeping an eye on Dramabeans for updates. Here's their most recent blog if you're interested.
http://www.dramabeans.com/2017/05/bride-of-the-water-god-2017-finds-its-home-on-mondays-and-tuesdays/

SecondLeadQueen. This site is a good source for reference.
http://www.koreandrama.org/lookout/

Viki has a channel but no license yet. DramaFever will upload episodes on Tuesdays and Wednesdays. On Demand Korea already has episode 1 up (the network has divided each episode into 30 minute segments). They're working on English subtitles.

Chun Ho-jin and Yoo Ah-in back together after "Six Flying Dragons". Love the scene in episode 12 between the two of them.

You're welcome. I'll post any new articles as I see them.

You need to read this article, Makes more sense after reading. Trailer is also here.
http://www.dramabeans.com/2017/05/90s-idols-and-accidental-kisses-in-kbss-the-best-hit/

Kim Jung-hyun (Jealousy Incarnate, Rebel Thief Who Stole the People) offered lead.
http://www.dramabeans.com/2017/05/jealousy-rebels-kim-jung-hyun-up-for-school-2017/

Kim Yoo-jung (Moonlight Drawn by Clouds) has been offered and is positively considering the lead role. School 2017 is scheduled for a July 2017 premiere.
http://www.dramabeans.com/2017/05/kim-yoo-jung-offered-leading-role-in-school-2017/

Congratulations to him on his co-starring role in "Strongest Deliveryman".
http://www.dramabeans.com/2017/05/jang-mi-kwan-and-lee-yeol-eum-join-kbss-strongest-deliveryman/