Summary of new features
Localized and accessible Simple View
Support for GPU applications written in OpenCL
Improved Virtual Machine Support
Enforce resource shares across all processor types
Intel GPU Support
Improved client scheduler and work-fetch policies
Application configuration: Run multiple tasks on a single GPU simultaneously
Note that BOINC 7 is incompatible with Domain Controllers on Windows (see below).
Scheduler changes
The new scheduler observes the resource share setting better than the old scheduler.
Another change is the client will no longer attempt to get work right after completing a job. Instead it will wait until it drops below a threshold and then start asking around for work. You can change both the lower threshold and upper threshold by changing these preference settings:
'Maintain enough tasks to keep busy for at least' (lower threshold)
'... and up to an additional' (upper threshold)