Roadmap update - so starting in January? when Bungie was in massive hot shit, they shared their internal development roadmap to the community to show their future additions/plans. They have made a few changes to the roadmap since then, here are the roadmaps. Of which there are 3, the latest being released yesterday.
January 31st Roadmap
February 21st Roadmap
March 15th Roadmap
The biggest thing to notice here is most of these features were already in Destiny 1. Other than that, most of the changes revolve around pushing features back.
Nightfall unique rewards were moved back from February to the March update.
They did move the challenge cards forward, from March into the February update, but they also removed the original modifiers that could be found on Nightfalls in exchange for them, so you actually have less variety now. They did come out and say they wanted to go with a clean slate and that this version of challenge cards was Step 1 and wanted to see community feedback.
Exotic repetition reduction (fewer duplicates) was pushed back from February to March. This was in Destiny 1 since Taken King I believe.
Exotic armor/weapon rework pushed back from March until May.
Heroic strike modifiers (something in BASE Destiny 1) was pushed back from March until May. (They stated they found a bug so it got pushed back, and were going to take the time to make sure they are satisfied with them)
Mods 2.0, the complete rework of the Mods system, was removed from the roadmap entirely. (Was previously listed in May).