yes you are a long time user people like you definately need to read it because in the PP8 series alot has changed.
In PP 8 series what was done in mods/hacks before are all standard concerning vb4 now. It has enabled our product to blend more clearly into the style than previous versions. With that come change in how things are done.
In a standalone photopost thats even more changes as all the stylesheets are new and templating. Users who where use to older versions have alot to contend with if they where using mods hacks template alterations etc. No old styles are compatible with the newer styles.
Everything was changed basically to bring things more up to date and totally xhtml css3 compliant as well as making the templating earlier to follow. We also added a plugin system in PP8 so that users can add in things without having to hack files.