The new name of the facility going forward at 601 Biscayne Boulevard that the Heat have called home since Jan. 2, 2000? AmericanAirlines Arena . . . at least for now. With Miami-Dade County assuming its rights to take over the naming-rights deal, and with no replacement in place, the Heat, a team source confirmed to the Sun Sentinel, will continue, in the interim, to operate the facility as AmericanAirlines Arena.