If you're interested in having the blog integrated with the board, I've written a blog frontpage for ABXD, which is pretty simple.
I made it a plugin for ABXD 3.0 but if you're interested I can give you the code for 2.2.3 (though it's really messy)

It takes all the threads in a forum as blog posts, and people can comment in the threads. take a look at my forum's front page. Very simple, maybe that's not what you're looking for, but who knows

There you go: http://www.dotanoobs.com/forum/get.php?id=3

So, create a forum where only staff can create threads but everyone can see and reply, set the forum ID on line 117 and you're done

(On my forum I replaced index.php with the blog and renamed the board index to board.php, but that requires rewriting too many links, so probably you'll want to put it in blog.php)

On the subject of 3.0... We don't have an ETA, but it'll probably take long
Maybe we'll release a preview version or something when we get a stable version or something... Anyways you can always get the latest code directly from github