You could use wordpress and something like Carp. Then use an RSS feed to tell Carp the most recent post to display. Take a look at this page for more information on Carp - http://www.geckotribe.com/rss/carp/ Basically, what carp does is its takes an RSS feed and converts that data to where it can be displayed on a wordpress page. But I doubt this feature is going to make a "paginated" or multipage post. But what you can do is give carp different RSS feeds from your forum. On page one of the post, feed forum section 1, 2 and 3. On page two, feed forum sections 4, 5 and 6 - and so on.
there are a couple of recent thread mods for SMF, i haven't looked at them yet, a client of mine wants it in their forum. i bet they can be juggled around to acheive the affect you want. here are 2 that i know of: http://custom.simplemachines.org/mods/index.php?mod=654 http://custom.simplemachines.org/mods/index.php?mod=1284