App Engine recently upgraded to version 1.8.6 in production, and the most obvious change is the errors summary screen.
Here’s the Errors screen prior to 1.8.6:
The current 1.8.6 Errors screen breaks down the errors into client and server-caused issues:
The newly added Error Details graph shows when different errors occur. For instance, this graph shows a client error (an incorrect request) about 19 hours ago:
