Darkness/Hulk, with art and cover by Dale Keown, arriving in stores this week, has been shipped with one out of every ten copies featuring an unannounced variant cover by Top Cow founder Marc Silvestri.  Top Cow President Matt Hawkins said, 'We wanted to give retailers who stocked up on this book an unexpected gift for doing so.'
 
Variant covers have been generating attention recently (see 'Variant Covers -- Are They Back?').