The excitement over Android Donut may have been premature, as new information regarding not only the fresh code's functionality but also its position in the platform ecosystem emerges. According to an Android framework engineer, Donut is not set to roll into Android OS 2.0; furthermore, he claims it will not include multitouch support.
The news demands distinction between Donut - which, like Cupcake, is a development test build, used to trial new functionality, patches and other tweaks - and full, official releases. Not all of Donut's functionality will make it into whichever official Android release comes next. More details over at Android Community.