The publisher revealed that it still has the source codes for the games as a response to reports indicating that the games couldn't come to modern platforms because of the lack of source codes.
The appeal against the authority's denial of the deal was set for July 28th but was delayed by two months for further negotiation.
Season 5 of Call of Duty: Modern Warfare 2 and Warzone 2 hopes to celebrate 50 years of hip hop by bringing two influential stars from the genre to the game.
A recent update made to Sledgehammer's Twitter profile seems to align with the leaked logo for this year's Call of Duty.
The allegedly leaked promotional image of Call of Duty: Modern Warfare 3 features Captain Price next to cans of Monster Energy.
"I think it's good news that the transaction can go through because it really shows the power of IPs, and where the industry is going," Ubisoft CEO Yves Guillemot says.
The action RPG also sold more units at launch than any other Blizzard Entertainment game to date.
"We're optimistic about getting this done, and excited about bringing more games to more players everywhere," says Xbox boss Phil Spencer.
The UK's Competition Appeal Tribunal was originally set to begin proceedings around Microsoft's appeal later this month.
Reports have previously claimed that the game, which is being developed primarily by Sledgehammer, was originally supposed to be paid DLC for Modern Warfare 2.
In recently submitted court documents, Microsoft stated that Nintendo has "a contractual right to obtain Activision content post-merger, including Call of Duty."
Other Activision franchises like Overwatch, Diablo, Crash Bandicoot, and more aren't guaranteed to release for PlayStation in the future.
"We look forward to a future where players globally have more choice to play their favorite games," says Xbox boss Phil Spencer.
Earlier this year, Microsoft signed a "binding" 10-year agreement with Nintendo to bring Call of Duty games to its platforms.
However, the CMA says it "aims to discharge its duty as soon as possible and in advance of this date."
The new Limited Time Mode is Zap Trap which sees nearby teammates arcing lightning that can knock out any enemies it passes through.
The FTC was recently denied an injunction against the proposed acquisition, while Microsoft has also begun negotiating with the CMA.
The CMA also states that if Microsoft chooses to suggest a restructured deal during negotiations, it could still "lead to a new merger investigation."
The FTC has until Friday to appeal against the recent ruling, which denied an injunction against Microsoft's proposed acquisition of Activision Blizzard.
Microsoft is now free to close the deal ahead of the July 18th deadline but must solve its issues with the CMA in the UK.