In the 21 July upgardes for the Mogul and Touch, the Touch gets Opera and the Mogul gets lumbered with the slightly improved (Oh yippee look at the new next to useless zoom function) IE.
That's just SO wrong.
I'm pretty sure the Opera Browser is a free download if you want to add it to your Mogul.
I'm pretty sure that you are thinking about opera mini (a java app...hmmm) . Or the 30 day trial of Opera Mobile 8.65 or the limited time trial beta of 9.5. At least the touch got the released 8.65.