Methods, apparatus and computer-readable media (transitory and non-transitory) are disclosed for determining one or more additional task features for a task of a user. In some implementations, the additional task features may be determined based on additional information from one or more sources that are distinct from the source(s) from which the task is identified or determined. The additional task features may be determined based on the additional information and based on user information that is associated with the user. For example, the additional information may define a superset of information and the additional task features may be a subset of the defined superset. The additional task features may be utilized to generate a task notification related to the task, and the task notification may be provided for presentation to the user.