After an absurd amount of time, Bungie has finally spoken about the upcoming changes to the Dreaming City and Last Wish vanity items, 1000 Voices, Braytech Schematics and Xur selling Forsaken Exotics. These are just a few of the changes coming in Season 6. Sources below if you'd like to see any of them for yourself.
UPDATE FROM BUNGIE: https://www.bungie.net/en/Explore/Detail/News/47715
The changes go live on April 9th, 2018.
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"OB1 by RalphReal" https://www.youtube.com/watch?v=WsrLp5K_Zd4
RNG in Seals is being adjusted in the near future: https://www.bungie.net/en/Explore/Detail/News/47660
The Light vs. Light Triumph is being updated: https://www.bungie.net/en/Explore/Detail/News/47638
Fireteam Chat breakdown with Bungie: https://www.youtube.com/watch?v=7Y1-os52Fuc&t=2717s
Xur will sell Forsaken Exotics in Season 7: https://www.reddit.com/r/DestinyTheGame/comments/aw7en6/dmg04_xur_will_be_updated_to_offer_forsaken/?utm_source=dlvr.it&utm_medium=twitter
Black Armory Lore Papers will be a guaranteed drop in Season 7: https://twitter.com/Cozmo23/status/1101616507568549888