Jeb is basically in

[Mr. Morden]

As discussed here: https://uselectionatlas.org/FORUM/index.php?topic=164982.msg4416841#msg4416841

I disagree with the notion that this makes him more "basically in" than the other candidates, but you can of course consider all of them as being "basically in".  Bush is setting up a PAC, but most of the other candidates already have PACs.

[Mr. Morden]

Kinda early.

I think people should chill out and announce during summer 2015 at the earliest.

Waste of time and resources otherwise and you are exposed to the media way too early (see Tim Pawlenty).

Again, this is neither an announcement that he's running nor an announcement of an exploratory committee.  Just an announcement that he's "actively exploring" the possibility of running.