Enlarge / Sony's PlayStation 5. (credit: Sony)

UK regulators reviewing Microsoft's proposed acquisition of Activision Blizzard reversed their stance on a key question today, saying they no longer believe Microsoft would remove the Call of Duty franchise from Sony's PlayStation consoles.

Last month, the UK Competition and Markets Authority (CMA) tentatively concluded that a combined Microsoft/Activision Blizzard would harm competition in console gaming. At the time, the CMA said evidence showed that "Microsoft would find it commercially beneficial to make Activision's games exclusive to its own consoles (or only available on PlayStation under materially worse conditions)." The agency also raised concerns about the merger affecting rivals in cloud gaming.

The preliminary finding was a victory for Sony, which has consistently expressed doubts about Microsoft's promise to keep putting Call of Duty games on PlayStation. But Microsoft argued that the CMA's financial model was flawed and was able to convince the agency to reverse its conclusion. In an announcement today , the CMA said it "received a significant amount of new evidence."