1. A method comprising: receiving property information from a provider node, the property information being descriptive of at least one of in-device property and at least one remote property having interface support; providing the property information to a delivery context client interface based context model; enabling access, by a consumer application, to a property associated with the property information via the delivery context client interface based context model to enable provision of consumer data to the property to enable adaptive or customized services to the consumer application via the property; enabling definition of an additional extension with respect to a property associated with the context model; and generating an event notification to indicate that a new property has been added including an additional extension to standard interfaces of the context model.