Avid readers in the U.K. can now get their Hunger Games fix on Kindle Unlimited, the latest launch by Amazon. Kindle Unlimited was first available only in the U.S., but has recently expanded to a U.K. reading audience. For £7.99 a month, subscribers can access an unlimited number of bestselling books including the Harry Potter series by J. K. Rowling, previously unavailable on Kindle. At the time of the launch, subscribers could access more than 650,000 eBooks and 2,000 audiobooks from Audibible.At first glance, Kindle Unlimited – think Netflix for books – seems like a great deal for U.K. readers, but it comes amid public controversy. One potential issue is the ongoing dispute between Amazon and bestselling authors like Stephen King, Lee Child and Elizabeth Gilbert, a group of more than 900 authors calling themselves Authors United. Authors United alleges that Amazon has blocked the sale of books because of a dispute with Hachette.While this blockage doesn’t necessarily impact best selling Hachette authors like David Baldacci, it has impacted debut and midlist authors. In a September email to Authors United members, organizer and author Douglas Preston says that more than 2,500 Hachette authors and 7,000 book titles have been impacted by the dispute. It is not clear if this dispute will also impact the availability of authors or book titles on Kindle Unlimited.Another potential fly in the ointment is the public criticism Amazon has received as a result of its Downton Abbey-themed Kindle ads which kicked off the fifth season of the popular series. In the ads, actors from the show are shown on set reading eBooks on their Kindles hidden behind their scripts. Though the ads seem innocuous enough, fans of the show have blasted the ads on social media, saying they destroyed the illusion of the period drama.Whether either controversy will impact Kindle Unlimited content or subscription sales remains to be seen.