Not really blanketing, but...
They DO plan to have 100% of their 3G network upgraded by 2014.. the plan is to do those cities by the end of this year, to light up everything within 50 miles of the interstates by 2011, do most of the rest in 2012 and then 2013 do the really rural sites where they'll have to be creative (some of these don't have grid power, they use wireless backhaul only, etc.)
AT&T makes me laugh -- they do have some areas faster than Verizon right now, but if you look at their coverage, they have like 20% of their own network upgraded to 3G (versus Verizon being at about 95%), and their network is smaller to boot. Verizon will probably have more LTE by 2011 than AT&T even has 3G.