relaunch
US: /ɹiˈɫɔntʃ/
UK: /ɹɪlˈɔːntʃ/
Advanced English dictionary
+ verb[VN] to start or present sth again in a new or different way, especially a product for sale: to relaunch a product / magazine / political party + The band are hoping to relaunch their career with a new song and a new image.
relaunch noun: a party to mark the relaunch of the magazine