Barnes & Noble announced some enhancements to it its Nook e-reading software for the PC, iPhone, iPod Touch, and iPad. There is a completely new app for the iphone and iPod.

"Completely new, the next-generation NOOK for iPhone application delivers the most personalized and easy-to-use eReading experience for iPhone and iPod touch owners," the company says. "NOOK for iPad adds customer-requested, in-app content rating and other improvements to the company’s popular iPad app, and NOOK for PC brings new branding to the company’s desktop software.

"We are committed to offering an easy-to-use, comfortable, and fun NOOK eReading experience across multiple platforms. NOOK for iPhone users can shop Barnes & Noble’s vast catalog of eBooks, while enjoying new, customization features and sharing their favorite eBooks with friends for free," said Douglas Gottlieb, VP, Digital Products for Barnes & Noble.com. "NOOK for iPhone puts thousands of eBooks in your pocket, and the reading experience is fantastic. It’s another way that Barnes & Noble’s NOOK offering makes it truly easy to read what you love, anywhere you like."

Barnes & Noble has been making a lot of moves to advance the Nook’s position in the e-reader competition (particularly with Amazon’s Kindle). In the last month alone, the company has launched NookStudy, an Android app, and perhaps most significantly it announced plans to install Nook boutiques in all of its brick and mortar stores across the country.

Earlier this summer, Barnes & Noble and Amazon got into a bit of a price war, in which both lowered the prices on their respective e-readers. Amazon has since announced a new generation of Kindle.