It looks like this will be an exclusive for Comic-Con 2012. After 100 copies being available for sale for at ECCC this past weekend. The Walking Dead Compendium Volume 1 is hard-bound with gold embossing, featuring the first 48-issues (over 1000 pages!). It also features a new cover illustration by Charlie Adlard.
The Compendium sells for $100. This will definitely be cheaper than trying to find all of the original comics! So save up now! I need to get one of these myself and then find Robert Kirkman at SDCC!