OK it's getting curiouser and curiouser!!
I had a colleague check it on his phone (different mobile provider) and it came up with the old data (Dec 20). However as soon as he clicked on the RSS icon everything in those 3 section updated to the latest content. So I went back to my desktop at work and clicked on the RSS icon and voila, everything updated.
This behavior on the Moodle front page started back in December. Now I'm not a web expert but is it possible that something is not being triggered on the moodle.org end?
I haven't experienced anything like this on any other sites I visit on a regular basis.