They have GOT to shake the formula even more than listed below. Looks pretty in a list and almost always dissapoints.
From what I remember the UI is getting some changes. The Director is being changed to a new screen to streamline and showcase activities to do
Solo Ops Activity being introduced with dynamic difficulty as per your skill level
Fireteam Ops, Basic strikes for 3 people
Flashpoint Ops, Difficult strikes for 6 people
Common/Rare/Legendary will be replaced with Tier1-5
Some content might be locked to a specific seasonal Guns. Yikes
New Armor system after 6 Years, Cap raised to 200, Will only have 3 stat per Armor piece
Set Armors introduced with minor bonuses for 2 and 4 pieces equipped
Special Ammo Meter
Only 1 Raid and Dungeon in an Year and removal of disgustingly greedy Dungeon Keys !!
Last season will have Dungeon/Raid Boss rush mode activity like Pantheon.
New expansion will have new location with Metroidvania style exploration