Apple Did It Again: Silent Upgrade of Mac mini Models

As with the Mac mini G4, Apple seems to have upgraded the Mac mini models without much emphasis, as reported by SuperG:

I have ordered a Mac mini Core solo with 1GB of RAM last Saturday to use it as a server, and what a surprise when I received the box!
My Mac mini has been upgraded:
- Core Duo 1.66GHz instead of Core Solo 1.5GHz
- HD 100GB instead of 60GB
- and a SuperDrive instead of a Combo!
Thanks Apple !
On the box, the specifications are those of a Mac mini Core Solo...

We doubt it is a mistake, probably the first samples of revision for the Mac mini models.