Not 2.2.4.156 specifically (I assume that's what you meant for the second version number?), but if it's one of the last three versions you've had installed, you will--as you know--see it in the diagnostic tool. But, release 2.2.4.158 (the latest as of my writing) did add a way to manually download the latest releases from the 2.2.2 or 2.2.3 series (2.2.3.148 and 2.2.2.129, specifically) if you want to revert to them:
If you're on 2.2.4.158 and think your Z-Wave problems might be specific to something after 2.2.4.148, then you can also revert just the Z-Wave stack to the version used as of that release:
So ... a few things that may help if you end up with problems and don't have 2.2.4.156 available, even though it might not literally be 2.2.4.156 (but if you don't change versions more than a few times, hopefully you'll still have that too--or the other things that staff are apparently even slightly concerned about will solve your problems if needed). 
