One thing I may want to add is that there are a few conditions for this to happen- a) These changes are by no means overnight. They will slowly occur gradually as the GP cells are slowly run until they just become practice packs, but they may be decommisioned before that granted the IB3800's actually see a performance increase
if brung down to 0 volts.
But the above condition will only take place if this condition is not fullfilled- GP makes some breakthrough technology in their cells, while still requiring them to be brought down to .9V/cell. People that don't have an unlimited budget will gladly take the cheaper, easier maintnenced batteries while sacrificing only a few hundredths of a volt. Which means GP may have to make an average voltage increase of more than .2 (that doesn't cost a fortune).
Here's a scenario you can think of. You just got these amazing IB3800's. They have a 1.9 average voltage, with 500 seconds of runtime, and you are able to bring them down to 0 volts with a 20 dollar discharger. You also have a pack of GP3700's that requires you to buy the Novak Smart Tray so you can bring them down to .9V/cell. The GP's provide the same voltage, but we'll call it 15 seconds less runtime. Given the cost is the same (which it probably will be), wouldn't you rather take the longer run-time, easier maintnenced pack? So I guess what really matters is wether or not GP, or rather the matching companies (including Novak), develop something amazing, that is cheaper or the same price (or even above slightly, for the sake of the argument).
At least that logic seems right to me...