343 Industries and Microsoft announced the planned migration of game types and maps from Halo 3, Halo: Reach and Halo 4 into Halo: The Master Chief Collection in June. Now, the number of maps transferred has been confirmed as over 6.6 million.
The copying over of maps took place earlier this month, and this is the first announcement on how successful it's been. Their forum explains that maps and game types can be accessed on MCC "when Halo: Reach releases on both platforms (with Halo 3 and Halo 4 content on PC becoming available once those titles are released)", and that they'll give a more specific date when they can.
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