On the 24th of March 2016, starting from 12:00 PM CET (EU server) and 04:00 PDT (NA server), the Open Beta servers will not be available for five hours (until approximately 17:00 CET - 09:00 AM PDT) due to the application of Update 0.14.1972. The content of this major update will be disclosed in a separate post.
Please note that the maintenance can be extended beyond the abovementioned timeframe. We apologize for the inconvenience.