Yes, I see that the announcement says that the FFI is improved, so I look at the documentation page to see how it is improved, and I see quite a few links, but these are mostly old links to contributed docs, none obviously covering the new release. I guess that the books page linked to documentation page is the one most likely to include anything about the FFI, but the newest book I spot there is 8 months old. Google search for pharo 7.0 FFI turns up the same release announcement and nothing else relevant.