Version 4.0 should be out soon (at RC2 now):
https://www.qubes-os.org/news/2017/10/23/qubes-40-rc2/
Some exciting changes are coming:
https://www.qubes-os.org/news/2017/10/03/core3/
https://www.qubes-os.org/doc/releases/4.0/release-notes/
EDIT: Downvotes for providing relevant sources, really?
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