According to recently rumors from CanonRumors, there will be two non-L lens to be announced in 2016. One is image stabilization EF 85mm f/1.8 IS lens, the other is EF-S 22mm f/2 STM lens. CR said this rumor is coming from a unknown source, so take this with a grain of salt.
Canon filed several new prime lens patent in Japan with image stabilizer feature. These are EF 85mm f/1.8 IS, EF 100mm f/2 IS, EF 135mm f/2.8 IS.