There is a plan for complete rewrite on the product details view and controls on it all of them to use rest services and mostly JQuery without any update panels and postbacks. However I do not know the exact date when this feature will be implemented. Moreover, we will not remove the old controls so the old controls and templates will stay as they are, we will just introduce an alternative product details which is more "modern" and simply better.
We have this in our roadmap however however at this point we have no timeline when this will be implemented.
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