Figured I'd post this in case some people didn't see it. Some notes on 2.1 taken from Diablofans.
-Old Legendaries are going to get revamped in 2.1, but not retroactively, so hoarding them now is pointless
-No ETA for 2.1 yet, but some information about the patch will be shared 'pretty soon'
-Details about Legendary Gems are coming 'very soon' in a blog post
-The aforementioned Legendary gems will most probably fit into Rings and Amulets
-The devs are currently looking at how the Infernal Machine events can be improved (both as process and reward structure)
-The so-called "Hellfire Amulet" will come with 2.1 Hellfire Amulet will unlock a randomly rolled Passive for your class
-Tiered Rifts are not going to be static dungeons: they are random - same as Nephalem Rifts, but the devs are working on toning down the amount of randomness that can impact the time for finishing a Rift
-Reduction of Conduit Pylon's power is being tested internally for Tiered Rifts, because the devs don't want players at the top of the Leaderboards to be there just because of luck
-The monsters in Tiered Rifts will drop no loot, but the bosses at the end will compensate with huge amounts of loot, including a very high chance for Legendaries, gems, crafting plans, and so on
-Cindercoat used to be even stronger internally and already was tuned down, but Blizzard is aware that it is still REALLY strong; no plans to nerf it though. (yay!)
-Invoker Set was originally intended to be a Crusader set as Thorns was a larger theme for Crusaders
-The devs are working on a new Crusader set that will buff Phalanx or Shield Bash