Cryptocurrencytalk is another site where most coin announcements can be found beside Bitcointalk. Some actually prefer that site more than this forum since it's not that crowded. However, traffic-wise, Bitcointalk still stands as the major outlet for promotion when it comes to forums, as the number of members of this site is massive compared to others.
Now, aside from these two, you should also take a look at Bitcoingarden and Allcryptotalk, as both also provide a medium for ANNs. They also have local sections which are favorable for people who are not native English speakers.
I agree cryptocurrencytalk is less crowd which is nice at times.