Were the floppies upgraded at all during their life, as in faster read/write abilities and noticeably greater capacity
We briefly moved on from 1.44MB floppies to 120MB floppies, then quickly after that started using Iomega zip disks/drives. I still use zip disks for loading modified graphics code onto some of our machines which are running Windows NT as we can't use USB memory sticks.
From good ol' Wikipedia:
An attempt to continue the traditional diskette was the SuperDisk(LS-120) in the late 1990s, with a capacity of 120 MB which was backward compatible with standard 3½-inch floppies.