Lots of changes made to Reach according to the Bungie podcast. Most sound like they're for the better. Some are just bug fixes.
- DMR now has 15 shots to a clip.
- Needle Rifle now has 21 shots to a clip.
- Grenades are toned down. They now do 1 point less damage to your health beyond your shields which means your health will now regenerate back to full health. They also take a bit longer to detonate and the radius is a bit smaller.
- Meleeing someone in Armor Lock no longer drops your shields.
- Active Camo doesn't jam your whole team's radar. (Might have been a bug, I don't remember that one.)
- Spartans move slightly faster and jump slightly higher.
- CTF spawn/cap is different on Swordbase and Powerhouse.
- Stockpile score areas are different on both Swordbase and Powerhouse.
- Plasma Launcher damage is toned down. Tracking reduced. Lock on time is increased. Still an anti-infantry weapon but is now more anti-vehicle. As of right now it doesn't spawn on any maps.
- Magnum shoots slightly slower, clip size is staying the same.
- Assault Rifle damage slightly higher.
- Elite shields now take 4 seconds to recharge as opposed to 3 seconds previously.
- Vehicles are "meatier" than before. More like Halo 3 vehicles.
- Shields reflect damage much more accurately.
- Headshot bug fixed.
- Melee slowed down. Compared to Halo 3's. (GODDAMN IT)
- Reticule fixed and easier to see.
- Easier to tell where you're being shot from.
- Sniper Rifle more "idiot proof." (?)
Also, much more armor customization:
Commendations are far more detailed:
