Heat oven to 450°F. In large bowl, toss dippers with oil to coat evenly; arrange in ungreased 15x10x1-inch pan. Bake 15 to 20 minutes or until vegetables are crisp-tender and bread cubes are toasted.
In medium bowl, toss cheeses and flour to mix. Place wine in 2-quart saucepan; cook over medium heat about 1 minute or until very hot. DO NOT BOIL. Add cheese mixture 1/2 cup at a time, stirring each time until melted. Cook until very warm. Pour into fondue pot. Stir in garlic powder. Keep warm over medium-low heat.
To serve, skewer roasted vegetables and bread cubes with fondue forks to be dipped into warm cheese.