It feels weird.
The folder name is still .\UV4 and the µVision program filename is still UV4.EXE. This is for compatibility reasons with older µVision versions. This is true since 2013, so since about 12 years.
So it seems, it's an ancient software.
Yes, µVision 5 is 12 years old but is still maintained and extended. µVision 4, 3 and 2 was even much older. For new applications, you can use MDK 6 which works under Windows, Linux, and Mac OS (not just Windows like µVision 5). However, the debug experience is still best with µVision 5 (especially trace and Event Recorder). MDK 6 will catch up in this area until the end of this year.
It would be great if V6 could catch up this year. I asked many developers, and it seems they don't like V6 but prefer V5.
:D