What does Form 1008-S payment reduction notification mean?

A notice/mailing from an unknown mortgage company. I received this notice and don't think it's real. It refers to lowing your interest rate and mortgage payments. The more research I do, the more it looks like a solicitation. I found something on a government website that suggested I be very careful with mailings like this, it is most likely a private mortgage company that wants me to refinance with them. They said if I wanted to look into the benefits of the Governmental Economic Stimulus Act of 2008, I should contact my mortgage company.