We will be doing a read-write test of the Oregon data center on August 16th, 2014 beginning around 11am EST. We have no planned downtime during this test, only read-only periods during the failover and fail back as DNS propagates around the world.
This test is only for our Q&A Sites, including Stack Overflow, as well as Stack Overflow Careers. Other services will remain online from New York during this test.
You can follow the @StackStatus twitter for status updates during the test.