What is Utopia? And what relevance does it have today? These are the questions Jameson wants to ask and answer in this, his latest and most substantial offering since "A Singular Modernity." "Archaelologies of the Future" picks up Jameson's larger project entitled "The Poetics of the Social Forms" (first hearlded in "The Political Unconscious") where he suggests that today's historical situation requires archaeologies of the future and not forecasts of the past--meaning, we must take as our political signposts a potentially different future, even if that means radically rethinking the present and seeing it as an archaic relic, instead of nostaligically clinging to the modernity project (a la Ulrich Bech or Jurgen Habermas). As such, Jameson pronounces Modernity, as a project, dead but simultaneously refuses to accept post-Modernity as the only choice, which for him would be accepting the cultural logic of late capitalism.
It is within this context that, through a rigorous examination of the form of a Utopian text (most notably: More's "Utopia"), Jameson envigorates Utopia and claims it has relevance for us today. Jameson's defense of Utopia can be seen as far back as his "Marxism and Form," while discussing Marcuse's Utopianism, Jameson affirms that Utopia--as a wild projection of a possible world--has more relevance than practical strategies. This is because Utopia relentlessly believes that an entirely new world is possible, not just piecemeal reformism.
The major thesis of this book is that Utopia's primary contribution is that it allows us to break, in thought, with the current order of things. By projecting a hypothetical future, Utopian texts allow us to think of our present as a contingent and changing time that can be broken and revamped.
The second half of the book amasses all of Jameson's writing on Utopia--minus the most recent essay "The Politics of Utopia," published in "New Left Review." I think they excluded this essay because the first half of the book basically is an extended version of the essay.
If you are someone invested in Utopian studies, then, you must read this book. If you are someone who things Utopia is simply a wishful fancy of a too ideal world to actually be lived, then, this book will give you another perspective to consider.