There's some speculation that Shimano will go BB386 as well in a year or two. But I think you will be able to fit BB386 cranks onto a BB30 frame just by using different cups/spacers.
BB386 with an adaptor will also work on traditional threaded bottom brackets > http://www.bikeradar.com/news/article/fsa-release-bb386-evo-adaptors-for-existing-frames-31113/
@rive_gauche started
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BB386 with an adaptor will also work on traditional threaded bottom brackets > http://www.bikeradar.com/news/article/fsa-release-bb386-evo-adaptors-for-existing-frames-31113/