I think I saw one repo in that list for Fremantle - also a number of them - if you click on the repo lists so you can see the distro folders does seem to have Fremantle versions.

I wouldn't try to install OS2008 apps on your N900 thinking it will work - it might even break something. I would, to be on the safe, side, treat anything as if it was from extras-devel.

I've found some useful stuff this way for my N810 but I'm also aware of the risks in doing so.