If you believe what’s reported on Korean forums like Clien.net and SLRclub things will start to get very interesting soon. Samsung is rumored to have partnered with Fuji and Ricoh-Pentax to deliver them new APS-C and FF sensors. These sensors would support H. 265 codec and cost 30% less than what you have to pay for equivalent Sony sensors.
P.S.: Rumors aside there is a fact: Samsung and Fuji have announced a partnership earlier this year. More about the Samsung sensor rumors at MirrorlessRumors.com