Launching first to beta, Currents is a G Suite app that enables people to have meaningful discussions and interactions across your organization, helping keep everyone in the know and giving leaders the opportunity to connect with their employees.

Currents is replacing Google+ for G Suite, and has a new look, feel, and set of features. All of your organization’s existing Google+ content will automatically transfer to Currents once you are enrolled in the beta.

Admin and End Users are impacted but this is why you'd use it;

Exchange ideas at scale:
Currents makes it easy to have meaningful discussions by enabling leaders and employees to exchange ideas across the organization and gather valuable feedback and input from others — without flooding inboxes.

Connect people to content:
Currents connects employees to useful and timely content that is personalized to their role and interests. Giving employees access to relevant content keeps them connected to the organization and creates more learning opportunities:

Manage and curate with ease:
Admins can shape the discussion in the organization by creating custom streams to promote specific content to a targeted set of employees or the entire company. Additionally, admins can measure engagement across the platform with metrics to track usage and understand what content is resonating across the organization.
Source : Gsuite Updates