Facebook has rebranded itself as Meta to reflect its focus on building the 'metaverse,' a shared virtual environment, while separating itself from its social media origins. CEO Mark Zuckerberg emphasizes that the change aims to unify its various technologies and apps, despite ongoing scrutiny and controversies surrounding the company's practices. The rebranding includes a new stock ticker 'MVRS,' a shift in branding for its VR products, and plans to hire 10,000 employees in Europe to advance metaverse development.