Per some comments from David “Hi-Fi” Moore, we think this will be like a mix of DDQ and the Gauntlet. No more is known yet, but we might get a video or post before the night is over.
Progression Reward:
3630: 
Made me think of this:
Very curious to discover what this event has in store for us! 
Me, too. I’ll post at my earliest opportunity after it goes live.
I’m pretty excited for a stand-alone event to give out a 4*. First of its kind plus a new PvE story is welcoming.
I hope it is obtainable as I always got stuck at the beginning of the 3rd leg of Gauntlet. Also hope it doesn’t limit my roster. I have 73 characters, but when they make limited roster PvE, I feel like I can barely play.
Hope not. Not fan of locked roster battles either. Seems illogical to encourage you to develop a large roster then padlock them all out.
I’m hoping that over the 30 days the event goes on that one of each cover is available for grabs
I’m going to guess at least 2 server crashes
Yeah, that’s my slight concern. Only once I did a full clear of the Gauntlet, just hope whatever awaits us isn’t as infuriating as those nodes.
Details are up, there is just the 1 reward.
Wonder how many nodes you have to beat since it is such a small amount.
It appears you team up with Ant-Man (no other featured chars) to complete a DDQ type event to win your very own Ant-Man!
(i bet it is waves of Tietsu + Muscle lol) /sarcasm
“Complete all 5 missions to earn your own Ant-Man!”
It doesn’t sound that bad, but I’m still skeptical due to it’s a 
reward, so it’s not going to be a walk in the park…
define ‘mission’… each one could be a gauntlet. since its a 30 day event and a **** , I’m guessing it won’t be ‘easy’
I am very antsy to see what this event will hold - under 2 hours now…also pretty glad that the scaling is gone. I think some of us are misinterpreting the 30-day event statement. This one probably only runs for 3 days or something and they will introduce another one similar but harder for a “better” cover and then do it again with a rinse/ repeat of the same events…we shall soon see…
That’s why I’m skeptical. In writing it doesn’t sound bad but in practice though…completely different story.
A 30-day event? I completely missed that detail. OK, I can see it. That score (3630) is not a score. That’s the number of games you have to win. 
I’m annoyed that this starts in 40 minutes and the devs haven’t given us any info on what to expect. I shouldn’t be surprised by this, given what we’ve seen in the past, but still… we got that nice video before the first run of Ultron; I was hoping for something similar.
the Ant-icipation is swarming now.
t minus 28 minutes to server crash. initiation sequence activated…
nodes look repeatable so should be no prob with progression award 
Looks like they are repeatble for rewards, but not for points.