Oracle has updated the Java SE Support Roadmap. A more detailed white paper will follow shortly, but here are the key changes made:

The public availability of Java SE 8 updates from Oracle has been extended to at least January 2019. Moreover, Oracle will continue to provide consumers with updates for personal (non-corporate) use of Java SE 8 through at least the end of 2020.

Oracle will continue to support Java SE 8 Web Start applications for public and personal (non-corporate) use to the same dates noted above.

Oracle will continue to commercially support Java Web Start on Java SE 8 for commercial use, or when used in conjunction with Oracle products that have a Web Start dependency, through at least March, 2025.

As announced in 2015, Applets will continue to be supported in Java SE 8 until at least March, 2019, pending continued support by browser vendors.