Life, don't talk to
me about Life...
Yes, if you try with IC614, you'll get "command not found"!
In previous releases, we used to have lots of different executables for different combinations of capabilities. For example, in IC5141, there was icfb, icms, msfb, icca, icde, icds, layout, layoutPlus (and I'm sure more). In practice, the vast majority of users used "icfb" all the time, especially as the main benefit of having a smaller executable foot print really made insignificant difference on modern compute platforms. Having all these executables increased the amount of testing needed, for very little user benefit.
So in IC61X we moved to a new executable name "virtuoso". We also provided "icfb" which printed a warning (saying that icfb was going away, but then proceeded to launch virtuoso). In IC614, this compatibility script has finally been removed.