HOw does The Warhawk beta compare to the full game?

Actually i saw on the warhawk website (Here, and its the last bullet on the list) that there is downloadable content through '08. So thats cool...

KEY FEATURES

Log on and join thousands of online players in heated 32-player battles:

• Epic next-gen multi-modal design immerses you in a deep 3rd person gameplay experience.
• Fly or hover in the Warhawk to engage in intense dogfights with dozens of fighters and ground forces aimed your way.
• Take control of armored tanks or utility vehicles to defend your base or launch a ground assault.
• Continue the battle on-foot and choose from a powerful arsenal of weapons, including rocket launchers, flame throwers, and proximity mines.
• Select one of four online game modes including Deathmatch, Team Deathmatch, Capture the Flag and an all-new Zone Mode.
• Customize your soldier with an unlimited combination of armor and squad markings.
• Team up with friends and create competitive clans and stay organized with user friendly communication tools.
• Complex stat tracking records and rewards your accomplishments on the battlefield.
• Bluetooth and USB headset compatibility for strategic communications and excessive online chatter.
• Expansion and vehicle and character customization packs scheduled for download through 2008.