During the AllThingsD D10 conference tonight, Apple CEO Tim Cook was asked about Apple and Facebook’s relationship. The question came in the context of iOS 5 users having the ability to easily share through Twitter on their iPads, iPhones, and iPod touches. To this, Cook said “stay tuned.”

With WWDC less than two weeks away, we can’t help but to speculate that Facebook will get the iOS 5-Twitter treatment in iOS 6. iOS 4 betas contained such Facebook integration, but the feature was scrapped at the last minute. Perhaps this had something to do with an Apple/Facebook falling out, something demonstrated by Facebook’s removal from Apple’s music social network, Ping.

In other social network news, Cook said that Apple was not interested in acquiring Instagram, the iPhone and Android based photosharing app that was acquired by Facebook for $1 billion. Apple Senior Vice President of Marketing Phil Schiller previously said that Instagram “jumped the shark” when it launched on Android.