If you clicked the link and opened the spreadsheet to see/get the March release then the answer is no.
And in long:
There are near always 2 versions available for any Xerox device, one is a General Release and one is a SPAR.
General releases are new builds thoroughly tested.
Spar releases are the General release with patches applied, they are not Beta, they are the same tested version with fixes and features added, the key difference is that while the GR got tested for everything, the spar gets tested for things that have been changed (So say they fix a login issue with Office365, they test that Office 365 works again, and maybe that it did not stop Gmail from working at the same time, they do not necessarily check that copying a booklet still works because the code was never touched that controls that)
Spar links tend to not change, so the link today is the same as next year, they just change the file it links to.
And you can get the latest for just about every machine except those in production class from Xerox.com/Security.
Click here in the Quick release lookup table which is a direct link to an excel spreadsheet that has the latest general and the latest spar for most every device, you can see it as of today here, but it doesn't move
Then, open in Excel (Or Google docs, or Open office etc etc) and CTRL+F to find the printer, and grab the spar link, as seen here:
I agree, not convenient, certainly not well advertised.
And here is my handy cheat sheet for "Umm, which one is actually newer?" (I did not make it, just compiled multiple iages from different sources into one graphic)
Where I can foind the last firmware for the series Altalink C80xx ??
On the website is Oct 29 2019..