Here is a link to Justin's full story on the Pivot Phoenix DH, including a lot of photos and some ride impressions:
http://www.dirtragmag.com/blogarific/new-pivot-phoenix-dh-race-bike/

Despite being revealed at the same press camp as the Phoenix DH, Justin was under strict orders not to reveal the details of the new Mach 4 until later in June. Here's his blog on that bike, with lots of photos and details, plus a little bit about the trails he rode at Dead Horse Point State Park near Moab, Utah:
http://www.dirtragmag.com/blogarific/pivots-refined-2011-mach-4/

Karl also had a lot more to say than we could fit in print about his experience at RockShox Base Camp:
http://www.dirtragmag.com/blogarific/rockshox-base-camp-2010-durango/