Novelty is the quality of being new. Although it may be said to have an objective dimension (e.g. a new style of art coming into being, such as abstract art or impressionism) it ...
http://en.wikipedia.org/wiki/Novelty

Novelty theory attempts to calculate the ebb and flow of novelty in the universe as an inherent quality of time. It is an idea conceived of and discussed at length by Terence ...
http://en.wikipedia.org/wiki/Novelty_Theory

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nov·el·ty   (n v l-t) n. pl. nov·el·ties. 1. The quality of being novel; newness. 2. Something new and unusual; an innovation. 3. A small mass-produced article, such as a toy ...
http://www.thefreedictionary.com/novelty

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