As stated above - we like to dance around subjects that are definite in nature. You know, only a Sith speaks in absolutes. 
When it comes to KI, though, anything is possible. These extra few characters weren’t a plan at the beginning of Season 3. Ultimates for 15 characters were not a plan when Shadow Jago got his - even though we strictly said so. Things can change, and we understand that, and we hope you do, too.
So that brings us to now. What does the reveal of Eagle mean for KI? All it means is that Eagle will be in KI. What about more characters? That remains to be seen, but as for now we are extremely happy with the 29 characters in Killer Instinct, and what they have to offer. Both Iron Galaxy and Doule Helix have done an incredible job creating a game that encompasses the creativity of past iterations of KI, while keeping it fresh enough to bring in new fans to the IP.
Now let’s talk to the inevitable question of Season 4. You know my answer - stay tuned. However, I will advise you that there will not be a Season 4 announcement at E3. Will KI be at E3 at all? Well, I will be there. Take that as you will.
Doomsday theorists - this is not your time to shine, as Killer Instinct still has plenty of life left in it. Not going to E3 or not announcing a Season 4 is not the end of the word, no matter what forum-goers say. We still have plans to expand Killer Instinct to bring in as many fans to the series as possible. More on what that means this summer.
Early in 2016 we mentioned having 6,000,000 players. E3 last year we had just a hair under 7,000,000. As it stands now, that number is encroaching upon the 10,000,000 mark. Incredible. Not to get into the business details of these things, but let’s just say there is very much a sustainable player base month after month. What I am saying is no matter what happens with Killer Instinct in the next week, month, year, etc., there are still a ton of fans who thoroughly enjoy playing each day. There may only be a few thousand in this forums, and notable players may retire, take some time off, or just forget about the game, but more can and will take their place.
Apologies for the long-winded answer. Had to think very long as to how to approach this subject - despite what many forum members think 
. I know this message is purposefully ambiguous. Apologies, but that’s the nature of the beast.
As you were.