From the press release:
HULK & RED HULK SMASH HOLIDAY SEASON!
Marvel is proud to unveil both interconnecting Hulk Santa Variant covers from superstar artist Ed McGuinness, exclusively on Hulk #18 and Fall of The Hulks Gamma!

Retailers, please see this week’s Marvel Mailer for a special holiday offer regarding both Hulk Santa Variant covers.
HULK #18 (OCT090512)
HULK [...]

From the press release:
IMAGE UNITED’S MAMMOTH DEBUT COMPLETELY SELLS OUT UPON RELEASE!
IMAGE UNITED, the Image Comics crossover of the century, sells out at a distribution-level despite significant overprint!

25 November 2021 (Berkeley, CA) - IMAGE UNITED, the six-part crossover featuring Image Founders Erik Larsen, Rob Liefeld, Todd McFarlane, Whilce Portacio, Marc Silvestri and Jim Valentino, made [...]

Marvel have provided Hypergeek with a Five-page preview of Hulk #18, the opening issue of the ‘Fall of the Hulks’ crossover event. Hulk #18 also marks the return of fan-favourite artist Whilce Poracio to the Marvel Universe. The comic goes on sale on December 16th, 2009.
Whilce Portacio Returns To Marvel To Begin The Fall Of [...]

This October, Image United begins with a four-part prelude backup feature revealing the secret history of the highly anticipated Image Comics founder crossover in Savage Dragon #153, Witchblade #131, Invincible #67 and Spawn #195!
Image United writer Robert Kirkman says of the prelude,”These backups are not a preview, this is completely original material not collected in [...]