Definately seeing them live when they come over here. Last time they almost played the entirety of Iconoclast. While a great performance and all of those songs work really well in live setting, I found the setlist to be too homogenous (like the album) and I missed a lot of SX classics. If they play this album as a whole, I wouldn't even mind. Should be a blast.
And they consider a live release? Hell yes, last year's bootlegs sound amazing (also Russels vocal workshops), so I am sure they can capture a great performance. If they do that I hope they will cover their entire discography though (or go the Blind Guardian way and just record many shows and many songs)
Also, according to their website, the album charted well:
Underworld reaches worldwide chart success; new lyric video ‘Kiss Of Fire’ revealed
Posted on August 7, 2015
Underworld, our ninth studio album which is out now on Nuclear Blast Records, reached great chart results worldwide!
Switzerland: #10
Finland: #12
Netherlands: #20
Germany: #23
Sweden: #31 (Hard Rock #2)
USA : #36 (current Chart, Top Hard Rock #6, Billboard 200, #89)
France: #39
Japan: #46 (International #7)
Austria: #59
Belgium: #71
UK: #80 (Rock #7)
Canada: #103 (Hard Charts #14)
I have no idea what are considered good sales for a band like SX, but if this is good, I am very happy. Especially since the competition seems to be fairly high (lots of prog/power/symphonic metal records this year that have an overlap in audience, I've been buying quite some tickets/vinyls/albums this year and actually have to choose between bands unfortunately).