Some points from a great article:

• The old way of doing business where managers look after the media in a given market will become redundant. How people make decisions or are impacted by influence will become more personalised than ever. The information people receive will be more about their past interactions, others they engage with online and the products they purchase and less about where they live.
• The prioritisation of media will become more difficult than ever. In a world where information will be delivered in a niche manner on demand, the old PR economies of reach and influence matter considerably less.
• PR and customer service will move closer together. As the importance of mass media declines and the importance of the individual rises, the separation between journalist and everyday individual will become pointless.
• Everybody will become a company spokesperson. Building on the point above it will be impossible for traditional spokespeople to devote time to the growing number of on the record statements required. Rather corporate affairs and PR departments will need to train the entire organisation for influencer engagements.
• The tools for monitoring sentiment will be dizzyingly complicated. Monitoring your PR reputation simply by looking at the major news outlets outlets will seem archaic (if it isn’t already). Instead, PR departments will employ specially trained analysers to make sense of the wealth of data required to understand the public sentiment towards an organisation.
• PR will be even more important to an organisation. When everybody’s opinion matters, PR will be a paramount consideration in every decision a business makes.

Link to full article