It's a good question, I've looked and the Qualcomm Snapdragon 810 has the support needed, but I don't know if it'll be enabled by default or not in Android 6.
If it's not, then Google are starting to take the piss..
If it's not, then Google are starting to take the piss..
I didn't notice any mention of those, specially because they failed miserably last year parading full disk encryption on Nexus 6 and got bitten when reviews showed the performance degradation and lack of hardware encryption.