I haven't found many trance releases...There have always been a number of guys who do primarily dance/trance stuff. Doujin arranges have been awkwardly slow this year...Nowhere near as many as a couple years ago.
Have a look at "Jailbreak" from Jesus is Dead, from C70 (I believe). Perfectly insane hard rock arranges all the way through. If anyone thinks "Eight Melodies" from Earthbound wouldn't work as a rock arrage...well, listen. It's very similar to "Get Out of My Way" from Guilty Gear XX#Reload Korean Version:
http://briefcase.yahoo.com/ranma124x
Also, Woodsoft has a couple of albums out that seem to have slipped under the radar: K-Style Konami Arrange and Maicoso Basic Magazine, which covers a bunch of Falcom, Sega and Namco stuff. They also have another one titled Retro PC Game. So good to see they're still putting out some good stuff.
Lukar also has one out for the second Saga game (Final Fantasy Legends 2), called "Legend 1". It's a mini-album (6 tracks) and surprisingly, it doesn't arrange the battle theme from the game (the most recognizable tune, I think most would agree). Lukar is incredible...His Dragonslayer 4 (aka Legacy of the Wizard) arrange is spot-on perfect.
Mintjam's 5th Gig has some good material on it, but it's original stuff. Not that it's a BAD thing, but I would really like to see these guys tackle some popular franchises a little more indepth. "Be Positive!" is spectacular though.
And there is Atelier Iris 2 Arrange, which features two of the biggest doujin arrangers around. Only differences between it and the above ones are the price, availability and the publisher.