New Overwatch PTR patch notes are now online, outlining changes being tested for Overwatch in a patch that will probably go live for the teamplay shooter in a week or two. There are some major changes involved, including the addition of 21:9 resolution support, a no duplicate hero rule for competitive play, and more. This patch will also introduce the expected support/sniper, who is named Ana. This page has details on her kit, and here's the overview:

After being out of the fight for several years, one of Overwatch's founding members is returning. Introducing Ana—a battle-scarred veteran who supports her teammates from a distance using a unique and highly specialized collection of weapons.

Ana’s primary weapon is her Biotic Rifle, which fires long-range darts that can restore the health of her allies or deal ongoing damage to her enemies. Meanwhile, her Biotic Grenade is perfect for a close-quarters clash, simultaneously healing teammates and injuring foes caught in its small area of effect. (Affected allies will also receive a temporary increase to all incoming healing, while affected enemies can’t be healed for a few moments.) And if the battle starts to get out of hand, Ana's sidearm can fire a Sleep Dart, knocking her adversaries unconscious.

Plus, Ana's ultimate ability, Nano Boost, empowers one of her teammates, granting faster movement, increased damage, and resistance to enemy attacks.