Sridhar.Vandanapu said

Worried about new Win 10 upgrade will make Mozilla environment difficult to use like iPhones??? Or disabling adblockers like Adblockplus etc., ???? Any certain answers???

The Answer will be No! It will be same experience as windows 7 , 8 or 8.1. As the add-ons runs on Gecko engine of firefox, Support will be also the same. so if it can be installed. Then it add-ons are not a problem.

Sridhar.Vandanapu said

Worried about new Win 10 upgrade will make Mozilla environment difficult to use like iPhones??? Or disabling adblockers like Adblockplus etc., ???? Any certain answers???

I'm reverting back to Win 8 as Windows 10 is a working input language disaster; for those us using with mixed language keyboards, Win 10 isn't saving the important settings...everything from login to web browsing is way, way slower with screen colour changes. The whole 10 exercise has been shockingly thought-out by MS.