The new Z-Up templates probably won't matter to companies who only use SOLIDWORKS models. But some use models from different CAD systems. For example, if a company uses both CATIA and SOLIDWORKS, and they import a SOLIDWORKS part into a CATIA assembly the part will come in 'sideways' since CATIA considers the Z-Axis to be 'up and down' where SOLIDWORKS considers the Y-Axis to be 'up and down.' This change will help make orientation in space consistent across different applications. Another way to put it: In a Y-Up model the Front plane is the XY plane. In a Z-Up template the Front plane is the YZ plane.
Where does this matter ? I have never needed to use 3 arrows.
The new Z-Up templates probably won't matter to companies who only use SOLIDWORKS models. But some use models from different CAD systems. For example, if a company uses both CATIA and SOLIDWORKS, and they import a SOLIDWORKS part into a CATIA assembly the part will come in 'sideways' since CATIA considers the Z-Axis to be 'up and down' where SOLIDWORKS considers the Y-Axis to be 'up and down.' This change will help make orientation in space consistent across different applications.
Another way to put it: In a Y-Up model the Front plane is the XY plane. In a Z-Up template the Front plane is the YZ plane.