This year please!
Sadly they don’t have enough resources available to do it. Maybe in 2014 where it will be a 10 year Anniversary. To see Halo 2 in HD would be wonderful.
I don’t think it would be a quality remake if it came out this year. Plus it’ll be 10 years in 2014, which sounds better than 9.
Most H2 remake/anniversary discussions should go here please: https://forums.halowaypoint.com/yaf_postst151429_Halo-2-Anniversary-11-09-14.aspx
A similarly looking but much different view on the H2 remake can be had here: https://forums.halowaypoint.com/yaf_postst160703_Why-I-dont-want-343-to-make-a-Halo-2-Remake.aspx