Thanks for the screenshot. That prompted me to check it out on my phone and indeed the page content is different. I have been checking the front page exclusively from my work computer for the past month so that suggests the issue is on my end not Moodle's.
Lesson learned: always check with multiple devices over different networks!!! I'll take it up with my IT department.
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.
I notice that the Useful posts, Events and Resources content on the home page is about a week old as of 16:05 EST today. For example, the Resources block listing of plugins is about 1 week behind the latest updates. Before the upgrade it would list the latest 2 plugin updates within minutes of them being uploaded. Also the Moodlemoot Italia is over, yet is still listed.
Not show stoppers but something is definitely not updating as frequently as it used to do before the upgrade.