When do I receive update for my Nexus 6 ?

[AC Question]

Whe do I receive update for my Nexus 6 ?

My brand new N6 build is LRX21O lollipop 5.0. My question is, Will I directly get updated to Marshmallow 6.0 OR through a series of Lollipop updates ?

Eagerly waiting for the Reply.

Thanking in advance.

Regards
Anikethan