I saw the 3.10.0 release came out yesterday.

https://www.dell.com/support/home/en-us/drivers/driversdetails?driverid=fmk91&dcp=email

We have 2 instances running 3.9.0 and neither of them are seeing the updates (3.9.1, 3.9.2, 3.10.0) are available with the Online option as described here

I looked at the website downloads.dell.com/openmanage_enterprise/ and noticed the dates of those folders is NEWER than the date of this

https://downloads.dell.com/openmanage_enterprise//LexingtonUpdates.xml

and those versions don't appear in that file, as it seems the should.