Has anybody figured out if it is finally possible to customize the "Universal Start Menu search" or replace the Bing Search by Google search or any other prefered online search engine?

In Windows 8.1 that was sadly not possible and i assume it won't be possible to customize it in Windows 10, but if anybody has figured out if it is possbile or if it definitiv won't be possible i'd be happy about the Information with source.

Thanks a lot.