Well, its not like they WANTED it to come out at the time of the conflict. Remember, these films take at least a year to make, so the project was probably started early 2005, way before any of the current problems started.
Just because it has a plane in it doesn't mean it's about the World Trade Centre.
I'm joking.
As to the topic, meh, it's just a movie. There was that United Something-or-other movie earlier in the year. I don't think there's some vast global conspiracy against Islam through the release dates of movies - I actually think the idea is quite ludicrous.
On the other hand, I'm fundamentally opposed to making movies based upon the events of 9/11 in a time which I feel is too soon to the events in question. I see it as almost callous to the relatives of those who died in that tragedy, as such movies are most likely commerical ventures rather than truly artistic ones.
Perhaps one day a movie will come out in recognition of all the Muslims that died in WTC. I forgot the exact numbers but Muslims made up a very large percentqage of those killed.
Although it occured on USA soil, a very large number of the businesses in the Twin Towers were owned by Muslims and many of the employees were Muslims of Mid eastern nationalities.