On the same day as the rocky iPhone 6 and iPhone 6 Plus pre-order, Apple is reporting on its iCloud System Status site that a small percentage of users are experiencing issues with iCloud Mail and iCloud Notes. According to the detailed timeline, the issues began about 45 minutes ago and are ongoing for 0.05% of users. August proved a rough month for iCloud uptime, with major issues reported by Apple on multiple occasions, although the current outage seems minor so far.

https://twitter.com/ChrisWillman/status/510478601838280704