Announcements of a company's web site redesign is not news to a publication that specializes in energy science and technology R&D. I'll take your press release, but please do not follow up a week later to ask when I will write about it for my newsletter, which focuses on government-funded research, development and demonstration programs.
I get hundreds of press releases each week, most of which I immediately discard. It is a waste of my time to then have to read additional follow up emails from oblivious PR professionals asking why I did not immediately respond to their earth-shattering news release about someone redesigning their company logo.
Ever hear of targeting your message?