Tech update is wider screen, new locations and re-code. Check quote above about pre-techs' goal. You won't get (m)any lewds in the tech itself
To expand, DC is
very upfront about how development is going on stream and why it takes as long as it does.
They've had numerous coders with different standards work on the game over the years and the result is huge spaghetti code.
For example, the Main Story Part 1 was delayed a whole ass month after the progress bar hit 100% due to bug fixes
alone.
MS Part 2 and 3 saw delays not nearly as severe as this, but it became pretty clear that the code needed to be fixed up or else delays that big would repeat. Hence why the tech update started immediately after.
The plan was to bring the game into widescreen for Android optimization, add new locations on 1 map instead of having to make a separate one, and clean up the code a bit. On top of that, there was to a batch of scenes for 6 characters at the end so it that there was something there for people who just wanted a good fap.
The former two happened
quickly. DC expected updating the school to take 3 weeks. He did it in 1. This included day evening and night versions for some of the screens. Even the new locations didn't take long.
I bring this up because it's important to know just how bad the coding of SS was. If the code wasn't a complete mess, the tech update would have been done in 4 months tops just as DC estimated. But it was so shit the basically had to recode the whole game.
DC admitted that he knows how frustrating this is. But it would have had to happen sooner or later and sooner is far better.
There will be less bugs, less time fixing bugs, implementing new content will be easier and come out faster.
And during all this, DC has gotten a head start on Annie and Rhonda's content. Has added in elements to the tech update that would of have been done at a much later date such as a better UI. And of course 26 new scenes for the past year and another batch due when the update finally drops.
I'm not saying people can't be mad at how long this is taking or that DC is above criticism for poorly managing the code base and who touches it prior to this, but to act like the guy is being heinously deceptive about it when he very explicitly is not is just absurd.