There are currently no Halo side-story games in development, Halo franchise overlord 343 Industries has told OXM.
"I can tell you we're not working on any side stories as games at the moment," said franchise development director Frank O'Connor. "There'll certainly be more Halo fiction entering the universe, but we've no new games to announce right now."
2011 does, however, mark the 10 year anniversary of Halo, and O'Connor says 343 will ensure fans get new content.
"2011 is the tenth anniversary of Halo, and we'll make sure that the fanbase, the userbase, and the community is energised with cool new content and fiction," said O'Connor. "We'll kick off 2011 with the first of three novels from Greg Bear, which explores the Forerunner universe, and there will be more information about the 'contemporary' Halo novels coming from Karen Traviss. And by contemporary, we mean events of 2552 and beyond."
O'Connor also recognises that there remain many unanswered questions in the Halo universe, questions 343 plans to answer.
"I think that there are a lot of questions that fans of the series want answered, and we'll certainly be in the business of answering those questions," he said. "But we would be lazy and very lacking in imagination if we didn't inject lots of brand new questions into the universe, and enigma, mystery, and awe are at the heart of what drives the fiction.
"I think building that sense of epic scale, while also focusing on creating great, memorable characters, and exciting new stories, are what will propel both 343 Industries and the universe it inhabits."
In the meantime, O'Connor says we can look forward to additional Halo: Reach DLC.
With no Halo game currently scheduled for 2011 - Gears of War 3 looks to be taking the autumn release slot - this year could be the first since 2008 in which we haven't received a new game in the Halo franchise. 2008 was of course the year in which Gears of War 2 hit stores.
We probably won't see a new game this year then, but it would not be surprising to be told about the next Halo at E3 this summer.