To quote the email I received from the support almost a year ago:
"We have confirmed this is a graphics driver problem, Apple messed up big time. It's affecting many of our games (and not only ours, afaik) and we hope to find some workaround soon, but I cannot tell how much longer will it take. Sorry for not having better news and thank you for your patience."
I forgot to leave the game downloading overnight, so I am only about half way through at the moment. Will test it as soon as it is downloaded.
UPDATE: I just installed it and did a test run. While it sits a good while on the dock at first, the game launches eventually. In-game loading takes only a couple of seconds.
Both Riddick games now work, but I am experiencing a graphic glitch on my system. The issue is with some lighting tones not being rendered properly, resulting in rather dim visuals. I am running the game on the 17" mid-2010 Macbook Pro with GT330m, so it may vary from system to system. Best to contact support about this.
But yeah, definitely an improvement since 10.8.0. However, it's still not perfect without a further fixing.