cannot find some updates in wsus or microsoft update catalog

hi

i had some problems in some gpo settings and i found this link including some important hotfixes which should be installed on 2008 R2 SP1

http://blogs.technet.com/b/yongrhee/archive/2012/09/29/list-of-domain-controllers-dc-s-related-hotfixes-post-sp1-for-windows-server-2008-r2-sp1.aspx

my wsus is set to obtain all kind of updates but these were not in repository

I also went to microsoft update catalog and searched for some of them but could not find them

for example :

<cite>support.microsoft.com/kb/2698279</cite>

is there any delay in updating microsoft catalog and wsus servers or i am missing some point ?