If the rumours turn out to be factual then 343 Industries, who are currently working on Halo 4, are also bringing the fan-favourite Halo 2 back to life in a Halo 2 Anniversary edition.
CVG report that the latest edition of the Official Xbox Magazine claim:
“Following the success of remake Halo Anniversary, 343 Industries has now started development of Halo 2 Anniversary.”
One would think the such an “official” publication that is highly respect in the community could know something we dont. We cannot take this as confirmed as of yet because the claims were in the rumours page.