It's hard to say whether ASEAN has become more integrated or still holds divergences over the South China Sea issue.
Some claimants such as Vietnam and the Philippines hope ASEAN could speak on their behalf, but other ASEAN nations have their own considerations and they don't want the China-ASEAN relationship to be tainted by the South China Sea issue. The importance of one to the other is obvious, and the South China Sea issue is not a core problem for bilateral ties between China and ASEAN. So far, ASEAN has stuck to its neutral position and I don't think it will move away from it.
China insists on solving the South China Sea territorial disputes through bilateral negotiations.
At the same time, we are willing to work with ASEAN to address their concerns. We have taken ASEAN's concerns and its role into consideration, and ASEAN has responded positively to this. Any interference from external powers will only complicate the issue