Yes. This is Twitter's own implementation of the idea. It may not get accepted. The maintainer of Graal asked Twitter some tough questions about whether they'd

Yes. This is Twitter's own implementation of the idea. It may not get accepted. The maintainer of Graal asked Twitter some tough questions about whether they'd really be maintaining it over the long run and how much it really helped when they first proposed the patch and didn't seem to get any answers. This seems like a continuation of the problem that has made Java a money hole for first Sun and then Oracle. Any attempt to stabilise its losses by making a better Java with proprietary extensions causes companies like Twitter or Red Hat to duplicate those features and submit competing implementations themselves, rather than simply pay the original team. Those duplicates then have to either both be maintained or one has to be rejected. Given this sort of behaviour it's not clear that there's any sustainable way to fund core Java development, other than indefinite cross-subsidisation by other revenue lines.