There are only certain characteristics the fitter could recommend something different than what is your best fit, today.  Basically, it is cast versus forged irons, or forgiving forged versus CB or MB.  If your swing changed, the shaft selection can change but not anticipated which direction it can go.  Ideal driver loft can't be estimated with major changes.

A good fitter can pick out where your swing is accomodating your current clubs and can suggest some tweaks during the fitting process.  Beyond that, it is all guessing.  The statistic is much more money is spent on equipment over lessons, and lessons will have the larger impact. 

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I'm getting fitted on Saturday after a 6 month swing change...I went to Kevin Sprecher at Sleepy Hollow GC in NY and he created a new swing for me after 10 lessons...After the lessons he told me to play some golf and find my swing....It's been 6 weeks now and I finally found my swing...Now I feel it's the right time to get fitted....My 910's and AP2's that I love might stay in the bag but with different shafts and grips...I would advise you to complete your swing change and then get fitted....

I'm with you Ron!  I just completed a major swing change myself and my scores are getting lower every week.  I sold my stock 710 AP1s and I am getting my custom fit next Friday in Augusta.  Good Luck to you Saturday and let us know how it turns out!