Carlson CEO Hubert Joly in recent weeks previewed 2010 plans for Carlson Hotels Worldwide, which include a project to revitalize the Radisson hotel brand in North America.Although Carlson executives are mum on specifics, future Radisson development will center around two distinctions: the upscale "green" Radisson, centered around primary and secondary cities and resorts, and the upper upscale Radisson Blu, which the company began rolling out early this year as it re-branded its Radisson SAS properties.Radisson, which Joly described as "mainly a business travel and meetings and events brand," currently has 360 properties worldwide operating and under development with the green designation, and 150 Radisson Blu properties operating and under development. Joly said the company also for the first time has introduced design standards for Radisson properties and will introduce service concepts that have worked well internationally to North American properties."People who've not traveled outside of Oklahoma might not have a full appreciation of what is a very vibrant, successful brand internationally," Joly said. "We're very successful in Latin America, Asia and we have some great properties in the United States, so we want to crystallize the essence of that and roll it out mainly to the North American portfolio."