Yes, by all accounts GloFo is offering 7nm before the end of 2018. And it was designed by IBM originally, so people have high hopes it'll be good. AMD have also mentioned 48-core Zen-2 arch Server chips on 7nm in 2018/2019.
EDIT: This Anandtech article is good, and not really out of date
http://www.anandtech.com/show/10704/globalfoundries-updates-roadmap-7-nm-in-2h-2018
Basically we're expecting 7nm from both GloFo and TSMC to start production 1H 2018 ish, and ship before the end of the year
(so mid-Navi, and Volta 1080Ti). Then 7nm+ from GloFo in 2019 sometime
(Navi Fury?). Then 5nm from TSMC in 2020, with GloFo also offering 5nm around then
(Navi and Volta successors from both companies).
So after the 28nm stagnation, we're actually back on track with steroids by the looks of things.
Summary of edit:
Mid-2017 to Early-2018 14nm/12nm: Vega Fury, and mid-Volta (GTX 1080 size)
Mid-2018 to Late-2018 7nm: mid-Navi (RX480 to GTX 1080 size), and MAYBE large Volta (if not then Early-2019)
Early-2019 to Mid-2019 7nm+: Navi Fury, MAYBE later large Volta
Mid-2020 to Mid-2021 5nm: mid-sized successors to Navi and Volta from both companies. And we'll probably be complaining "where are the 8K capable cards" around now