We will be doing a community upgrade on Friday, July 29. The community will be in a read-only state for approximately 7.5 hours, from 21:00 Friday - 04:30 Saturday PT (05:00 - 12:30 Saturday UTC). You will not see the data from the two hours immediately prior to the upgrade window, as our read-only snapshot will be taken at 19:00 Friday Pacific time. Once the read-only state is over, all data will once again be available.
If you want to know what to expect after the upgrade is done, please see New features and changes in Oracle Community. You can report any issues after the upgrade in the Community Feedback (No Product Questions) space, and there will be a dedicated thread for bug reports and feedback.
Topliners users can also visit Summary: New Features and Changes to Topliners! to see a video about the upgrade and provide feedback, and MOSC users can provide feedback in *Community Feedback and Suggestions (No Product Questions) (MOSC).