I expect Bungie to keep the extras from Halo 3 and move them to reach. So, to answer your question yes I think they will have double exp. weekend in reach.
There is NO duel-wielding weapons in Halo Reach. Double energy swords is impossible.
No he is not. Master Chief's legacy takes place after Halo: Reach.
No.
No
no. Halo Reach and Halo is owned and liscenced by Microsoft and is Only for Xbox 360. sorry.
Yes there is going to be a halo ODST, in fact its out right now. as for a halo 4 Microsoft has said they are considering it thought right now they are working on Halo Reach a prequel to halo Combat evolved. Apperently Halo reach reach will be the next series, so no Halo 4
no.
Grifball is a Double EXP Weekend playlist on Halo 3 matchmaking. It resembles football, but with bombs, swords, and Gravity Hammers! Grifball can be played in Halo 3's online multiplayer whenever it is featured as a Double EXP Weekend playlist.
the fall of the colony planet named 'reach'
No halo reach is going to be the last halo ( at least made by bungie)
You can not dual wield energy swords in halo 3 but there are rumors that you can in halo reach.
They say that their will be a halo 4, which is the movie.