HR has evolved and moved from a traditional role of being as a mere administrator to partnering with business on strategy. Search more info about:
Employee advocacy: Employee advocacy is about the voice of the employee. HR can play an important role in employee advocacy. It's about for instance creating a family friendly environment.
Change management
Employer branding
Analytics
Culture architect: A Culture architect is an individual who influence, motivate and engage employees in building the culture as defined or identified by business which leads to success of organization. See a discussion on LinkedIn for more info.