Now THIS trailer makes me want to see the movie. [link]

Differences:
Goku is in High School
Grandpa Gohan is still alive
Bulma’s hair isn’t completely blue
Roshi is not bald
Roshi does not appear to wear glasses
Yamcha has blonde streaks
Oozaru appears during the eclipse
Goku does not have a tail
Shenron is more western inspired, than eastern
Mai can shape shift
Bulma can fight
Roshi’s island is in the middle of a city
Shenron has to be summoned from a “Dragon Temple.”
Capsules transform instead of poofing.

Similarities:
Goku is a Saiyan
Picollo is a Namek-jin
Bulma is a scientist
Capsule Corp
Yamcha is a desert bandit
Chi Chi is a fighter
Roshi is humorous
Roshi likes women
Goku has spikey hair and a bang
Piccolo is green
Mai works for Piccolo
Goku has the 4 star Dragonball
All 7 dragonballs summon Shenron who grants one wish
Gokue wears an orange gi, and a blue gi
Kame Symbol
Roshi teaches Goku the Kamehameha
Flying
Mafuba
Piccolo was imprisoned for years
Piccolo spawns demonic minions
Ki blasts
Areal battles
Oozaru
Nyoibō is used, and called Nyoibō
Tournament
Bulma and Yamcha
Goku and Chi Chi
Dragonball landscapes
Blown up cities
Flying cars
Piccolo’s ship
Bulma has guns
Yamcha is bad at first
Goku runs around with ridiculously massive weights on his back
The classic “Trek through the Desert”
The original story of how the balls were created by man before we knew about Kami