I'm as indifferent to that as I was to the previous upgrades. If they do, fine, if they don't, also fine.
I have been satisfied with nearly all of the features in the hx4700 as it is. Are there bugs? Sure, but nothing I can't live with.
If they don't offer the upgrade, but include it in a future device, then I may or may not purchase it; although the chances are very good that I will.
No stress in my day over this. . . .
If this is the WORST thing to worry about, then I should be so lucky!
