Forge works on a Latest + LTS maintainence policy: we support the latest version of the game, and one other.
Currently, the latest is 1.19.3 and the LTS is 1.18.2.
However, 1.19.3 brought a lot of breaking changes in the game's code, which created a "barrier" of sorts when maintaining mods. It essentially needs to be treated as a separate version entirely from 1.19.2.
We cannot support all 3 (1.18.2, 1.19.2, 1.19.3) at the same time, and we are committed to supporting the latest, so we have a choice: keep our LTS as it is, or change it to 1.19.2.
It is important to note that this is more than likely not the last time this is going to happen. Mojang recently implemented something called "Feature Flags", which more-or-less allows features to be added in a minor version, bug tested, fixed and polished, before being activated in the next major release.
We expect that this will cause major breaking changes in lots of minor updates, so the decision here will set a precedent: if we go the route of supporting 1.19.2 and 1.19.3, we'll more than likely change the way the LTS system works entirely; supporting only the most recent major and minor versions.
As an example of what I mean: come the release of 1.21.5, we'll be supporting 1.21.0 as LTS, and 1.21.5 as latest. In all likelihood, there will be significant code change between the two, based on patterns we've observed so far.
We are unsure where to go, so we decided to put this decision to the community: this poll will last about a week, and the most popular option will be the route we take.