* Amazon (AMZN) is launching an e-book library today exclusively for Kindle and Kindle Fire users who are also Amazon Prime subscribers. Initially, the e-commerce giant will offer just 5,000 or so titles — none of them from the six big publishing houses will. Each user will also only be able to borrow one title at a time per month. (The Wall Street Journal)

* Groupon is planning to price its initial public offering (IPO) tomorrow and go public on Friday under the ticker symbol GRPN. (All Things D)

* Walter Isaacson’s biography of Steve Jobs has sold more than 379,000 copies since its launch last week, already making it the 18th bestselling book of the year. (The Bookseller)

* Yahoo (YHOO) released its Flipboard competitor, Livestand, which the company says “weaves together” content from the company’s media network and 100 third-party publishers.(Yahoo Advertising)

* Bluetooth headset and speaker-maker Jawbone will release its latest stylish device, UP, on November 6. The health-minded wristband will track daily activities like how much and how fast users walk, calories burned, how many hours slept — and even the quality of that sleep. (Fortune)

* Research in Motion’s (YHOO) stock dipped below $20 for the first time since 2004. (All Things D)

* Facebook co-founder Eduardo Saverin led a $7 million funding round in the barcode scanning and product search app ShopSavvy. (TechCrunch)

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