Confusion on bianca page, "Release Updates by Release Version"

Here:

there is one obvious error with the line reading:

Debian 13 “Bookworm”

which is easy enough to fix, but it’s the heading above that that is confusing:

“eLxr 26.04 Edge and Server, Bianca 13.3”

What is that trailing “13.3” supposed to represent? The underlying Debian release? Something else?

Thanks for your feedback! I’ve updated the topic to fix the codename and provide more context. It’s a reference to the release version, as you correctly mentioned.