There's a Network Alert posted at the top of the site about it, but for those who haven't followed the link, you should know that there has been a major upgrade to SBNation.com. The old SBNation.com was rarely updated and it was only useful as an index of all the team blogs.
The new SBNation.com has a team of editors posting links to current news stories with a brief analysis. The senior editor is Chris Mottram, who was brought onboard earlier this year to lead the new SBNation.com. The SBNation.com/NFL site is an excellent aggregator of NFL links, with Story Streams that gather many blog posts about related stories. Go check it out.