regarding the new S7, tried it out over the last weekend at bras brasah.. they only had one then, and i heard they are bringing in more.
the zr trem works great, very easy to tune. didn't go crazy with the trem but it keeps in tune well. seems like a really well designed trem. build quality is pretty decent all around, except for maybe a few poorly rounded fret ends.
the fretboard is made of rosewood i think, but it looked weird, there's almost a greenish tinge to it, perhaps some oil will help.
The neck feels great to me, almost similar to my carvin dc747. it's more of a rounder D shape, unlike the rg7321 neck which i don't like. but definitely not like a UV neck.
tonal wise the stock pickups are pretty usable to me. bridge is hot but a little thin, neck is smooth, but i'll switch them out eventually.