Launch Build Info provides easy access to four pieces of information.
turbineBuildDate - This is the date on which turbineVersion was released. This date (and the turbineVersion) will match a release listed here.
buildDate - This is the date when the Launch library was built (using the publishing flow in Launch). If your lest build was a day ago, you'll see that reflected here. Note that this value match up with a successful build in the Activity Log for your Library.
environment - This returns one of three values: "development", "staging", or "production". It can be used to drive conditional logic based on the Launch environment.
Configuring the data element is as easy as selecting the attribute from the provided dropdown.