...Apple are in it for the longhaul and they will probably maintain the same sort of margins they had...
My prediction is that there going to be a big drop is Mac Pro sales until we see the new ones or until/if Apple drops the price.
Hi
As a freelance broadcast video editor I too am in it for the longhaul.
At the top end, since 1993. A long list of Quadras 950/840AV, my Radius 8100/Power Macs 9150/9500/9600, my B&W G3 400, G4 DP450/MDD DP1.25, then various Dual G5s 2GHZ/2.5GHz...
Mostly, though, I haven't been a direct customer of Apple, since I source them from demo stock or second user.
Ironically this year I HAVE to replace the stalwart G5s as their rendering speed is increasingly unacceptable
I've even got the money sitting in the bank to buy new - from Apple this time

But I haven't. I'm a self-employed buyer who needs to get 'value for money'.
If I could buy an edit-capable Mac Pro octocore at last year's prices I would be in there without hesitation.
But I think Apple have worked out that, whilst they are in it to sell Mac Pros to professionals for the longhaul. there are less and less people who NEED a full-on Mac Pro rig.
So to retain overall profitability (of the Mac Pro range) from last March Apple decided they needed to ramp up the prices by 25% or whatever the figure is (more maybe in the UK or Oz).
Intel's Xeon prices don't help either, and the possibility of better chip yields of faster chips leading to a speed ramp across the range or lower prices to the end consumer seems to have evaporated,

Anyway Intel seems to have accelerated development of their 32nm chip production, I guess because it brings some quantifiable production cost benefit which will help profitability?
So will this lowering of future production costs get passed on to Apple, and will Apple pass any of it on to us when the new Mac Pros arrive?
That's the $64,000 question...
If there is some sort of price lowering of the mid/upper spec Mac Pros then I will go out and buy one, and a nice 27" i7 iMac would be very affordable as a tasty 2nd screen, and maybe its ethernet could be configured to give it some useful content-creation connectivity....