I would love to see a complete list. I'm not quite there on spotting them.
I believe that Pyrocan's Red dawn is a re-wrap of Red Alert. Powerhouse's Corkscrew is a re-wrap of their own Spinning rage. I spotted that one back in the "More NEW products on their way" thread. (tooting my own horn here)
These are the only 2 that I have been talented enough to spot, but I seem to recall that most of the Powerhouse "PRO" series cakes new this year were re-wraps of their own cakes. I could be wrong. At least Powerhouse didn't jack their prices up on their own re-wraps.
Maxpower used to have a semi-hidden drop down on their site that listed re-wraps. I went and pointed it out and it disappeared .
This is a list I wrote down last year, I think it is pretty accurate. there are more that Ill add when I remember them and if more come out.
Mystical Red Alert - Pyrocan Red Dawn Fortune Teller - Dinosuarus - Fandango - Fireworks central Haunted house (NOT BEM jubilee) 007 - Pyrocan Skyfall - Fireworks Central widow maker Competition Sky Tracer - Pyrocan Phantom Vulcan Executioner - Pyrocan Guardian Vulcan Pro series Crackling Chrysanthemum - Pyrocan Zodiac - Fireworks central Scarecrow Vulcan Pro series Red & white Strobe - Pyrocan The Canadian - Fireworks central Skull & crossbones Vulcan Pro series Multicolour peonies - Pyrocan Treasure chest - Fireworks central witch doctor Vulcan Pro series Gold Palms - Pyrocan Epic - Fireworks central Excorcist Competition CDC 9898 - Pyrocan KO - Fireworks central Iron Fist Mystical Master Blaster - Pyrocan Utopia True North The Glory - Fireworks central Ass Kicker Vulcan Wicked Witch - Pyrocan Wicked Vulcan Creeper - Fireworks Central Alien Mystical Seismic Thunder - Pyrocan Warrior Mystical Epic Thunder - Pyrocan Bad Mutha Mystical Tropical Thunder - Pyrocan Dark Rider