Off the top of my head:

Resistant Islands -- This is one of the more recent texts that talks about Okinawan history, and is very clearly revisionist, taking a perspective of Okinawan resistance towards colonizing powers defined mostly as Japan and the US. That said, its section about more current problems is one of the more in-depth and up-to-date.

Essays on Okinawa Problems -- This one is collected essays by the former governor of Okinawa who is also an academic AND was conscripted as a child into service during the Battle of Okinawa. I'm actually reading it now. Being a rare book-length work about Okinawa by a native Japanese speaker in English, it has a lot of details and primary sources from Japanese documents, but Japanese conservatives would take issue in how he chooses to interpret many of them. That said, I'm sure some would also prefer not to draw attention to such sources in the first place. Take it as you will.

These are ones I've read personally. There are other ones, too, with links at the bottom.

A lot of English language work tends to talk about Okinawans as a diaspora, or focus on older history, or the Battle of Okinawa itself. Academics who are interested in more contemporary history usually do it from a perspective of resistance, since that is part of what makes all of this notable. I'm not aware of any major academic work in English that is pro-Japanese or US base, although you can get an idea of that perspective by picking up various opinion articles in major media. You could also listen to Japanese rap; it is surprisingly conservative and pro-Tokyo.

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I won't go into depth, as this is outside the realm of history, but if you're interested in contemporary developments, you can google "Henoko relocation" or something like that.

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Other works (unvetted):

Identity and Resistance in Okinawa

Dancing with the Dead: Memory, Performance, and Everyday Life in Postwar Okinawa

Islands of Discontent: Okinawan Responses to Japanese and American Power

Myth, Protest and Struggle in Okinawa *

Okinawa and the U.S. Military: Identity Making in the Age of Globalization *

Japan and Okinawa: Structure and Subjectivity

. * Native Japanese writer

Heh, now I have an updated reading list. Thanks for giving me a reason to do that! And thanks for the question. You've made my day! XD