Dream Pod 9 have announced a delay in shipping Heavy Gear Arena.
From their website:
Due to issues with our printer in the USA that have been resolved, we are unable to ship the full color Arena Core Rule book on schedule as announced. Any orders that we have received with the full color Arena Core Rule book will ship on the 10th of December 2010 along with the second wave of Arena releases.
We apologize for any inconveniences that this delay may have caused.
On the other hand, the same book is available now in e-book format from DrivethruRPG.com . This package includes the full color e-book as well as a black and white small format e-book version.