I think it's really strange that he decided to split the technology update into 2 parts, just when the tag arrived, Why didn't he ever talk about it before?
As far as username7's explanation goes, that decision seems to have been made before that and given the above average amount of Jenny art DC produced in the last weeks/months, it's indeed likely that he was planning this for longer and didn't just start 2 days ago. Why else would he have focussed on Jenny (and even to some degree Debbie) that much on his streams?
As for the split? I mean, nobody is denying that they have to release something sooner or later. Not releasing anything for 18 months is ridiculous. So by splitting the update they get a lot of upsides and - objectively - only very few downsides. Sure, it'll take even longer in total, because they'll have to take care about the releases and such, but that's likely meaningsless by now.
And as to why he didn't talk? I mean, it's still a controversial thing to do, which you probably want to be sure about, before you introduce it to your patrons. Hinting at it beforehand will almost certainly do more bad than good. At least that's how I usually tackle these kind of decisions. Once you've announced them with some degree of certainty, it's hard to take them back.