@Oli_hd
Nope. Workbench is in Kickstart ROM at least since KS V36.
For example KS 3.1:
workbench.task
wbtag 39.1 (20.4.92)
workbench.library
wb 40.5 (24.5.93)
icon.library
icon 40.1 (15.2.93)
The parts on floppy are LoadWB (to launch the WB) and version.library (workbench version). A4000T KS ROM 40.70 is special, it has a floppy based workbench.library.
