Grargar: If by elsewhere you mean GamersGate, then you can safely ignore that, as GamersGate has a tendency of adding SecuROM to games that aren't SecuROMed to begin with.
The SecuROM section of the Big List of 3rd Party DRM on Steam doesn't mention any of the Aveyond games and neither is any mention of it on the games' forums.
Thank you! I've played the earlier Aveyond games and enjoyed them, so I was pretty happy to see them on sale but was a little leery when I saw that. And thank you for that link - I didn't know about The Big List. It's now been bookmarked. :)
ETA:
IAmSinistar: The Bridge. Very good. An even better bundle for folks now.
Wow. I just played through Chapter 1, and I have to say that I'm incredibly glad I listened to you and snatched The Bridge up when it was on sale a few days back! It's lovely art and an incredibly unique puzzler. So much fun!