Here's my reaction:
South Side of The Sky - Woah, did not expect the intro to sound like that, and the kick in sounds really cool. I like the overall sound but was begging Matt to try and imitate more of Bruford's style here, but I'm not going to complain because he still sounds great.
Sun Song - I like the theme used here, but I'm hoping there's more to it than that because otherwise it'd feel more like a average transition track, but I doubt that's what it will be...
Life By Light - Whoa. Jon is still an angel singer for sure. I absolutely am in-love with the music here also. I'm excited about this track.
Ember Without Name - I feel a Dream Theater influence here, and compared to Into Thin Air, it is like the dark side of the album, and the band is most technical and edgy here it seems. I liked all I heard from it and am excited for this song.
Into Thin Air - Unlike EWN, this is the (seemingly) lighter and airier side of the album (EWN and ITA seem like a Yin and Yang switch off, and I find that to be very creative, great idea GH, seriously!). Unfortunately, from what I've heard, I can't say I'm as impressed as I was with EWN. I like the themes and vocals, but it seems kind of cliche so far, but only time will tell.
Rest - BEAUTIFUL chord progression. Reminds me a lot of 'Afterglow' (by Genesis), and from what I've heard, sounds like an awesome album closer, how exciting.

Well, that's my two-cents. Overall I like the majority of it, and can't wait. Pre-ordering asap.