It won’t be.
NOT FROM GET GO!
A few thousand are to be produced initially and that will give more than enough guns for field trails and deployment. The production and induction process will take a few years surely and the guns will be evaluated, AGAIN, at unit level. Tested and tried in battlefield. A decision to continue with production of same gun or select a new one will only be made AFTER those years. You may not get such details in news for now or may ever but that is what the plan is. Also the concept of an indigenous gun have some supporters in the upper echelons and a side story is that may be after these initial 12-15k guns are produced at POF and the technology is acquired we may go for a Pakistani design, heavily based on the selected gun that we select (and have produced in few thousands) but with some tweaks based on lessons learned from all the real action and deployment at units level. This however is just an idea for now with the concerned authorities and the decision will be made one the initial batch is produced and inducted. I hope you can understand why this idea may not be made public officially (we won’t like to piss off the supplier who’s gun we are going to select).
As for “massively upgrading POF Wah” it is not that massive and it is not “upgrading” yet. It is a plan and a committed and will happen in near future at a considerable scale. Not confuse it with something that is “happening right now” and on a “massive scale”.