The replays is interesting.
The "Time progression clock/timer" is no longer in the command card area, it is now above it. The same goes to 'selecting to vision player'.
There are scoreboards, with categories: How many workers + what is currently building/researching; Minerals, Vespene Gas, Average minerals/gas per second, food. Then there are other boards that removes "amount of workers" and "food".
You can see the clicks and box selecting (of the selected player). Player colour circles can be seen around units (Not exactly sure how it works, sometimes I see blue selection on an red unit without a blue unit around it [Or was it the other way around?]). I assume it is player selection.
New PortraitsObserver
Marauder (Although we've seen it before)
Pylon (I assume this is the only Protoss building without the Protoss Advisor [Replaces Aldaris] portrait)
Stalker
Colossus (Reminds me of the Reaver)
Passive upgrades/functions are seen in the command cards area. So instead of seeing the typical yellow "Detector" underneath a unit name, a command card is seen as an eye representing detector.
Command Card Functions (These listed doesn't have borders, which means its a passive ability... though blink and stim pack has borders and is not passive)
Zealot Leg - Charge Ability
Eye - Detector
Observer - Auto cloak
Colossus - Climbing cliffs
Crosshair + Diamond (If Marauder is selected) - Concussion
Cog-like - Blink
According to one of the batches, it is true that the players can control unit abilities inside the bunker. At "09:42", the selected bunker shows stim pack and rally points. I'm not sure about the command card seen at the fourth column, last row where it has a big arrow.
None.