The Crowfall site has been updated with a new look at the Ranger Archetype along with a first pass at the class UI. The Ranger will feature both melee and ranged fighting styles giving the Archetype a lot of versatility.
The Ranger is considered the first character to make use of two power trays, one each for melee and ranged abilities. Rangers also utilize two different resources: Arrows and Energy. The Ranger's iFrame power is Sustain that allows a short burst of Lifesteal, a new stat for Crowfall that brings back a certain percent of damage dealt as health.
You can read much more about the Ranger, including more about specific abilities, by heading over to the Crowfall site.