From GameFAQs, 2 quotes from Twitter:
OLDER:
"ACE COMBAT @ PROJECT_ACES - 46m 46 minutes ago
"Special payment ticket" will be implemented from the update of tomorrow (12/4). This ticket, depending on the number, aircraft and skins, emblem, street, simple radio message, will be able to exchange such as the stockpile fuel. << Koyanagi >> # ACEINF
ACE COMBAT @ PROJECT_ACES - 43M 43 minutes ago
Items that can be replaced, you can check in there on a hanger in the menu "special payment Catalog". It should be noted that "special payment Catalog" is also a place to exchange. << Koyanagi >> # ACEINF
ACE COMBAT @ PROJECT_ACES - 41M 41 minutes ago
"Special payment ticket" login bonus and drop reward, you can win in a variety of ways such as challenge reward. << Koyanagi >> # ACEINF
ACE COMBAT @ PROJECT_ACES - 20 m 20 minutes ago
New items entering the hand only in exchange for "special payment ticket" also offers course. Little Bakashi the first-out ... << Koyanagi >> # ACEINF
ACE COMBAT @ PROJECT_ACES - 8M 8 minutes ago
It is a "slow!" And likely to receive a rebuked, but will be distributed "Kiri number reward" than the next ranking event. By the way, "7650 place" also is one of the Kiri number. << Koyanagi >> # ACEINF"
NEWER:
ACE COMBAT @ PROJECT_ACES - 27s 27 seconds ago
Since there is also such as adding or additional mission of the aircraft, please stay tuned tomorrow's update. ........ New category "BOMBER"? << Koyanagi >> # ACEINF
0 replies 12 retweets 0 favorites
ACE COMBAT @ PROJECT_ACES - 7M 7 minutes ago
And "special payment ticket" of earlier in [small update information] login bonus reward, consumption items such as research reports, contracts, will add only emblem. << Koyanagi >> # ACEINF
0 replies 17 retweets 7 favorites
ACE COMBAT @ PROJECT_ACES - 12M 12 minutes ago
Upper limit of [small update information] simple radio message is extended from 7 to 12 << Koyanagi >> # ACEINF"
CONCLUSION:
So, new category: Bomber, from Assault Horizon. Probably they will be a higher damage and aoe version of Attackers but much slower and heavy.