Probably not much. The Node Foundation is also a Linux Foundation project and they continue using permissive licenses.
Also the JS Foundation already announced that they're adopting the Apache 2.0 license as the default license but that existing projects will keep their MIT/etc licenses. Their open source licensing policy is hidden in the "IP Policy" PDF linked in the footer: https://js.foundation/pdf/ip-policy.pdf
Quote:
> The technical governing body of each Project is free to choose, [..] the Apache License, Version 2.0 [..]. If an alternative inbound or outbound license is required [..], the Board of Directors of the JS Foundation (the “Board”) may approve the use of an alternative license for inbound or outbound contributions on an exception basis.
The Linux Foundation already has a wide variety of projects besides Linux which are covered by a number of different licenses depending upon the project.
