Interactive drawing tools will be added to Perspective, absolutely. I doubt they’ll make the initial 8.0 release, however.
That said, support for vector drawings (svg) is in perspective today. You can draw something (in inkscape, for example), save it as an SVG, and then drag it into perspective. You will notice that the properties of the drawing component that is created actually contains all of the SVG paths, transforms, styles, etc. So while it is certainly awkward and inconvenient to do so today (because of the lack of interactive drawing tools), what is exciting about this model is that all of the drawing information is modeled in component properties, meaning that they are fully dynamic and can be manipulated by the binding system.