Yes. CSDS always shows the current version number. If the version number did not change after the upgrade, the upgrade was not successful.

For a successful upgrade, it's important to exactly follow the steps listed on the download page.

For the executable only release,

1. Download csdszip.exe to C:\SQDATA. It must be downloaded into this folder, and it must be named csdszip.exe
2. Run csdszip.exe. Assuming you haven't renamed your current version of csds.exe for a backup, running csdszip.exe prompts whether or not to overwrite csds.exe. If you don't get this prompt, and if you don't reply 'y', you won't successfully complete the upgrade.

For the complete release,

1. Download complete.exe to any folder other than C:\SQDATA. Using folder C:\TEMP is a good choice.
2. Run complete.exe. This will unpack 3 files into the current folder.
3. Run setup.exe to install CSDS.
4. Run CSDS to verify that the version number has changed.
5. Delete the files from C:\TEMP.