Yes, it's a traditional location for detailed version information of an app.
You may also place version info (and licence information) at splash screen which is also widely used.
And sometimes, version could become a part of the app name (because of different reasons, like user should always reference a concrete version of the app because it has a lot of differences from previous versions, or to be able to install several versions of the app and quickly distinguish one version from another) and should be placed at every place app name is mentioned (i.e. desktop application shortcut or even window title, etc).
For example, Adobe Photoshop for Mac OS X has it's version number at splash screen as well as in an app shortcut:
Personally, I think it's ok to show version number at splash screen but you should use version in a file names with care.
Concerning contact details. I'm not sure you should include this info into an any part of your app (since your contacts may change), but put it on a site instead which could be accessed from the Help menu ("Visit developer site", "Contact developers", etc) or from an About screen (and not from a splash since it should disappear quickly).