I don't know what's going on, but the SitePoint home page hasn't updated for over a week, since the 17th to be precise. All the blog posts and articles displayed are from the 17th of September and earlier, without any of the new blog posts or articles being displayed. This is is the same for me at work and at home, so I can only assume everyone is experiencing this issue. I have doubts though as I would be surprised if no one from SitePoint has picked up on this yet.
Here's what I currently see, and have been seeing for the last 10 days.
We're just in the process of migrating it so things will be sorted very soon. Sorry.
That's what I see too, but the latest article in your screenshot is from September 24th.