GSA has confirmed that 72 LTE operators have launched commercial LTE services, including 25 networks launched so far in 2012. Commercial LTE services are now available today in 37 countries.

According to GSA report 319 operators have committed to commercial LTE network deployments or are engaged in trials, technology testing or studies. 258 firm commercial LTE network deployments are either in deployment, commercially launched, or are planned in 84 countries. Another 61 operators in 13 additional countries are engaged in LTE technology trials, tests or studies. 

The countries with commercial LTE services are: Angola, Armenia, Australia, Austria, Bahrain, Belarus, Brazil, Canada, Croatia, Denmark, Estonia, Finland, Germany, Hong Kong, Hungary, India, Japan, Kuwait, Kyrgyzstan, Latvia, Lithuania, Moldova, Netherlands, Norway, Philippines, Poland, Portugal, Puerto Rico, Russia, Saudi Arabia, Singapore, South Korea, Sweden, UAE, Uruguay, USA, and Uzbekistan

A snapshot of current LTE deployment from http://ltemaps.org/ is below.