For smaller or commercial buys, agencies often skip issuing a separate synopsis and a separate solicitation and instead post one combined notice that does both jobs. That means there is usually no separate RFP coming later, what you see is what you respond to, so read it as closely as you would a full solicitation, not as a preview. These are common on simplified acquisitions and off-the-shelf commercial purchases.

In a sentence

"This is a combined synopsis/solicitation for commercial items; no separate solicitation will be issued." There is no follow-up document coming, so whatever instructions and deadlines are in this one notice are the whole game.