This might be the year one or more of your clients decide to rebrand. You could go to beat reporters who cover the company, but it's unlikely they would write about the rebranding as such. For this job you'd need a marketing-minded reporter. Here's a list of candidates, fresh as of Jan. 2018.
Journalists are leaving media brands every week. Read the fruits of 16 confidential interviews with journalists now working at tech brands or PR agencies, and five interviews with the executives who hired these journalists.