Fortunately the contract for Destiny is public:
http://documents.latimes.com/bungie-activision-contract/
The $500million is definitely for the first game.
I'm actually surprised it's that low. For just the 360 version's development they're allocating $140million (section 11.4). And marketing expenses typically far surpass development expenses.
http://www.businessweek.com/article...-expensive-game-ever-and-it-s-almost-obsolete : In GTA 5 $115million was spent on development and around $160million spent on marketing. And all things considered it seemed a fairly modest marketing campaign from a consumer point of view.
The above contract references 2010 as being in the future. GTA 5 development began in 2009 and was released 9 months ago. Destiny won't be released for some time yet. It has a longer dev cycle undoubtedly.
Also related to the contract. Check out section 11.2. It's amazing how standard (for a console title) and horrific Bungie's deal is. You'd think a dev of their reknown would be able to get something better. They get 20-35% of
net income after expenses from the game. In other words after Activision deducts all of their expenses in any way related to the game (including marketing) Bungie gets
up to 35% of what's left over. That up to 35% only applies if the game makes at least 400million
net profit after expenses. That's not going to happen. That'd be 20million sales if Activision has net profit after expenses of $20/sale which is likely on the high side. That's painful. There's also clause 11.5 that cuts a good chunk out of their royalties if the game has been delayed, which it has.
AAA is such a screwed up system for developers.