On start of PhotoLab 3 you are informed of which version and build you are using.
On calling a Nik plugin there is no (easy) way to identify which version you are actually working on. Specifically there is no Help / About information available.
How come ?? At upgrade times, such as the new Nik Collection 3, it is important to verify the installation of the new version is OK.
Johannes Elkjaer Madsen