There is no real thing as yin release or yang release, though it can be argued that genjutsu is yin release it isnt a nature based jutsu like the other 5. Its more of a form of energy. There is however a 6th element which isnt yin or yang release. Its yin AND yang= yin-yang release. This ability is granted by the rinnegan and thats why jiraiya commented on nagato being able to use the 6th element;
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So its fire, wind, lightning, earth, water and yin-yang.
To be knowledge the only yin-yang release i know is the sage's Banbutsu Sozo