Dynamic Packages are a Work-in-Progress and there the core functions of the RTL will reside in a base RTL package while other modules/packages including the main program depend on that.
and when will the first betas of this be released? I want to build FPC like LEGO!!!!

We have not even released the
3.2.4 fixes release yet. The next
major release is
very far off, not to mention that as I said it's
work-in-progress, that means it's not here yet even
main.