See the third image at http://pytools.codeplex.com/wikipage?title=Features%20Editor#Intellisense
We currently show the documentation only, which does not indicate that the member is a variable of a certain type. It looks like the description is of api_version rather than the type of api_version.
Since there is no universal convention for documenting members, we should display "value of type ..." as the first line of the tooltip. The type documentation can appear below.