Finally found where they hid the "Tool Tips" for spells!

Bytebrain

It's not as easy as hovering the mouse over a spell, but at least it works:

Select a character with spells, click the spell icon so the various spells shoes.
Then click the "Help" button, navigate to the right in Help, and there's a short description of each spell. Actually more info than the old Tool Tips.

I have no idea why this isn't mentioned anywhere, but there it is..

EDIT
Don't know why I remembered it as having descriptions of the spells, that's wrong.
It just shows the spell names, which is what Tool Tips does on the PC edition. I guess that's all we need, though.
My bad.

Garrison64

Cool. I'll have to give that a try. Thanks.