Microchip's RSS feed for 8-bit uCs lists "AVR64DU28" -- accidental leak or typo?

I was going through RSS feeds, thinking what I should be following to more easily repost around here...

And Microchip's RSS feed: https://www.microchip.com/RSS/recent-8bitPIC.xml for 8-bit uCs contains a very interesting line.

<item>

<title>AVR64DU28</title>

<description> </description>

<link>http://www.microchip.com/en-us/product/AVR64DU28</link>

<pubDate>6/1/2023 9:32:19 AM</pubDate>

</item>

I do wonder what this could be? I've never heard of "DU" before. There's DA, DB, DD, and EA so far. DU would be new.