It's a real pleasure that Night Ranger come back in Europe . Saw them in France in 1985 when they were supporting Foreigner. I've been waiting since!
As Andrew you mentionned "There are many more to be added" on your 17th february news, do you know if the band will expect to play some dates on its own outside festival in Europe?
I use to go at the Z7 near Basel in Switzerland when a lot a great bands often come (capacity about 800).
http://www.z-7.ch/start.php
It will be a nice opportunity for the band (and myself, let's dream!) as the programme in this venue is not full in june.
Journey played this venue when JSS was with them in 2007 (I saw too Soul Sirkus in 2005), and Foreigner played several times.
Dates in festival are very interesting with such bands included, but I think Night Ranger set might be short in these festivals. The band is not expected in 2 dates in Paris and in Luxemburg (only Foreigner and Journey are mention).