You should have a standard menu item "Check for Updates" in the Help menu.
Here are a couple of examples of Check for Updates results:
❌ Figure: Bad example - Skype does a good job, with a green tick and simple message. The actual version number would have made it more complete
❌ Figure: Bad example - Snagit has horrible UI (red text when it is not an error and Hyperlinks without underlines), however the link to the latest features is not bad
✅ Figure: Good example - SSW Code Auditor has a great UI (using the freely available component in .NET Toolkit)
If you implement this code from the SSW Toolkit, you will get this UI:




