well, as the plugin popularity has grown, we get more and more feature requests… we try to take the most often requested first (plus a few that we want to work)…
So the major goal of 5.0 is to put a full plugin api in place so we, or users, can write their little plugins easily to extend simple press and not have to bloat the overall package – ours has gotten quite big!
We have already moved watches, subscriptions, post ratings, and editors (yes, now you can only grab the editors your want or add new ones) to plugins. Much more moving is planned. And we already have on new plugin which is akismet spam protection on posts..
We also will be attempting to change from a skin system to a templating system for forum appearance to make the design and flow of the forum elements much much more customizable…
So a lot going on in 5.0… We dont have a planned date yet, but it wont be this year… We will need healthy alpha and beta test periods.