The first demo was originally supposed to be released on October 16th, 2022. The developer then posted an update on October 20th asking for "a little more time"
The first demo would then be released on November 2nd
The next time we would hear from the developer would be April 7th, 2023, where they would detail development & release an update to the previous demo, also stating they'd like to release another updated demo at a later date.
On the April 7th post, the developer also acknowledged that the sporadic, infrequent progress updates were sub-optimal (Ci-En posts range from 1 day to 5 months apart at this point), and set themself a "quota" of 2 posts per month.
This lasted for two months.
The next demo was released on August 11th 2023, and the developer said that they had been (past tense) expecting to have their "project" completed by August, but now they were expressing doubts about having it finished by September (2023).
In the August 11th update, they made first mention of an official release date coming soon. "Just a little while longer"
The next demo would be released on October 10th 2023.
On December 31st 2023 the developer posted another update, where they said they had been hoping to have the "project" "completed" within 2023, but due to additions (probably adding player suggestions) and there being more work than expected, this wasn't possible.
In the December 31st post, the dev said they were aiming to "complete" the project by March (2024). "Just a little while longer"
Februrary 1st 2024, March 14th, the dev says they're aiming for "completion" "within March"
March 25th, "The next Ci-En update is scheduled for April 28th-29th" (but no demo yet, maybe it was pushed back to April?)
The dev had a few posts on Twitter in the coming days, saying they've been having trouble with the game engine & compilation errors.
March 31st, the next demo released out of nowhere. (what the fuck is this timeline)
The developer then went almost silent. Only a few updates on Twitter, again related to development difficulty.
May 2nd "There are many bugs related to grab attacks, and restraining tentacles are often a breeding ground for bugs"
May 15th "DoOnce"
May 22nd,"It wasn't completed."
June 12th a Ci-En post, the game now has an official DLSite page, with release date set for late June to early July (2024).
July 1st, Another Ci-En post with teaser screenshots. "We are in the final stages of production" "There are only a few steps left"
July 8th Twitter post, "I'm currently working on a release date around July 18th. I'm sorry for procrastinating."
July 16th Twitter post, "Progress. I have almost finished putting the game together, but the debugging process has been more difficult than expected and will likely take longer than planned. I apologize for the delay, but I would appreciate it if you could wait a little longer."