• Spruced up (and probably more) graphics
• Extra random events along with accompanying speech samples
• Events that occur only once certain criteria in the game are met
• Achievements
• 5 difficulty levels
• Load/Save game feature
• New upgradable skill - Scavenging
• Shop with the items have have scavenged for boosts
• Expandable Food Storage area, adding considerably to the challenge of managing your colony

Possibly: bespoke music tracks

Perhaps the most important feature that will be added is a full Campaign Mode.  I haven't decided exactly how long this will be yet but it should be a sizeable chunk of strategy gaming.