Sources: 
Halo Studios is 'actively developing' remakes of
Halo 2 and
Halo 3 using
Unreal Engine 5, following the successful remake of
Halo: Combat Evolved. Sources indicate that pre-production commenced after the original game's positive feedback during testing.
The remakes are reportedly in early development, with significant focus on the single-player campaign, given past multiplayer challenges. According to insiders, these titles are confirming internal support from
Xbox as part of a broader strategy extending to the entire original trilogy.
A crucial factor in these developments is the switch from the proprietary
Slipspace engine to
Unreal Engine 5, expected to enhance the remakes significantly. With ongoing changes in the gaming landscape, a release for
Xbox Series X/S is likely, and
cross-gen titles or even timed releases for
PS5 are under consideration.
“While the
Halo CE remake is planned for 2026, pre-production for
Halo 2 and
Halo 3 is already underway,” said an insider. The current plan indicates a continued focus on story-driven experiences, addressing community feedback on the multiplayer aspects of recent
Halo titles.
Sources: 
Halo Studios is reportedly 'actively developing' remakes of Halo 2 and Halo 3 using Unreal Engine 5, following the positive reception of the Halo: Combat Evolved remake. Xbox is backing these projects, which are likely in early development and potentially set for cross-gen releases for consoles including Xbox and PS5.