Not good news. (From what Iunderstand from Google translations.)
Acording to this article, Signal 2 was postponed indefinitely. I don`t think it is only actors`s scredules. Let see if there will be a chance to see the sequal someday.
*****
Ace Story, earnings deteriorated, Signal 2 broadcast uncertain."
Ace Story, the first Korean producer to create a Netflix original drama, has not shown any real growth momentum since its listing. This year, there are no works other than Kingdom 2, and Signal 2, which was announced in the first half, was postponed indefinitely.
In addition, the first half of 'Signal 2', which was originally revealed at the IPO press conference, was postponed indefinitely. Lee Jung-baek, CEO of Lee Sang-baek on July 4, said, "We will show two dramas such as Kingdom 2 and Signal 2 during the first half of 2020."
'Signal', written by artist Eun-hee Kim, is the work that produced the largest number of enthusiasts among domestic dramas produced by Ace Story. In addition to the bone marrow fans, investors also wanted to make season 2, and they were very excited about the news.
An official of the company said, "Signal is delayed from the original production due to the actor's schedule, etc .."
(Google translations)
http://www.newspim.com/news/view/20200106000834
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