If you look at the top bar on the forum in the browser you'll see a new link called "Recent Topics" which is much like recent threads on the old MIA system. But it lets you view the most recent threads that were active rather than posts like it was before. The recent post system is still place though so if you prefer that you can still use it, this is just another option to view new threads. Right now I'm going to set it to show 100, but if needed I can change that in the future as needed.
Take care!
Luke