This just got posted to the varnish-announce mailing list.
We have just released Varnish Cache 5.0:
This release comes almost exactly 10 years after Varnish Cache 1.0,
and also marks 10 years without any significant security incidents.
Next major release (either 5.1 or 6.0) will happen on March 15 2017.
PS: Please help fund my Varnish habit: http://phk.freebsd.dk/VML/
I'll be working on updated configs for Varnish 5 (as I did for Varnish 4) as soon as I find some time for it.