Apple to pass Microsoft on revenues this quarter?

Apple’s earning call is set for tomorrow.  We know Apple will report selling 1.7 million iPhone 4s in three short days (and millions more iPhone 3GSs) as well as somewhere between 2.9-3.5 million Macs.  But will it be enough to pass its long time rival?

Andy Zaky poses the question at Fortune: Will, after 30 years of being behind Microsoft in revenues, Apple finally surpass Microsoft?  Both companies are expected to report just over $15 Billion in revenue for the quarter and most analysts think is is just a matter of time before Apple is truly the bigger company.

Apple surpassed Microsoft in market cap for the first time (since the 80′s) earlier this year.

Zaky points out that Microsoft’s 50+% operating margin will keep it ahead in the income game for some time ahead.