Blizzard offers free BattleTag change to commemorate Cassidy's new name in Overwatch - Dot Esports
Much like one of Blizzard’s most recognizable characters, players may also want to change their names in Blizzard’s various worlds.5, all players that do not currently have a free name change stored on their account will be able to request one through Blizzard’s name change request service.
After players use their free BattleTag change, all subsequent changes will cost $10.