Factory repositories.

Hi all,
Question about factory repos... was just checking factory installation age and noticed that i only "need" two repos to run factory and those are:
- factory-oss http://download.opensuse.org/factory/repo/oss
- factory-non-oss http://download.opensuse.org/factory/repo/non-oss

But after installation of openSUSE-20140918-0 factory snapshot i got few more repos on my (yast) list:

- factory-oss
- factory-non-oss
and
- update-factory http://download.opensuse.org/update/factory/
- update-factory-non-oss http://download.opensuse.org/update/factory-non-oss/

I mean at this moment they contain bash and flash updates, so i guess - very useful, but then why there is no mention of them on official wiki page as required repositories....
can someone elaborate, please?