There's a decent-length interview with Geddy over at Rolling Stone today.
Some tidbits:
On new songs:
...we'll probably release one as soon as it's ready, before the tour starts, and then probably release the second one as the tour starts. But our hope was to really get something down on tape, so we could play these songs live and road test them in a way. We're still kind of throwing titles back in forth, but one is called "Caravan."
On recording Tom Sawyer:
"Tom Sawyer" was in many ways the most difficult song to record on that record. I remember even though the writing of the song came together pretty quickly, putting it down on tape was a little difficult. We were trying different sounds, and going with a whole different approach to lyrics -- the kind of spoken word thing, getting the right sound for Alex's guitar, and so on. It was kind of a dark horse. And then in the mixing, it all came together. When we finished it, we were so pleased with what happened, because we kind of had the least expectations of it, because of the difficulty we had.I think a lot of musicians probably go through a similar thing, where they have this one song that they beat themselves up over, and then the next thing you know, it's their biggest song.