In Update 1.2.3, Bungie will be expanding with new bounties for Destiny 2. Here is what Senior Design Lead Tyson Green had to say on the subject:

With the original launch of Destiny, bounties provided a set of daily objectives that players could use to advance faction reputation or earn XP to level up their gear. These were removed to streamline the activity experience in Destiny 2 and reduce the number of ?chores? that players felt compelled to complete every day. In retrospect, we realized that was an over-correction, and optional daily objectives to achieve specific goals are something we want to restore.

The bounties returning to Destiny 2 in Update 1.2.3 are a return to most of the properties of bounties in The Taken King. They will be obtained from a variety of vendors, they will generally award XP and faction reputation (though some will offer even better rewards), and can be redeemed ?in the field? to immediately claim your rewards. In Forsaken, you may also see some bounties drop in the wild.
There are two new mechanics. Bounties will expire if left uncompleted, and acquiring them will cost a small amount of Glimmer. We wanted to avoid the ?grab every bounty you see until your inventory is packed and sort them out later? experience without constraining players to the tiny inventory they found in previous iterations of the game.

In Forsaken, more vendors will have more bounties on offer, and some will provide Legendary (or better) rewards for comp...