with some help from google you will find:
Major new features include:
Plesk Desktop - Now administrators and clients have quick access to major management functions and they have immediate access to mission critical information and statistics. The task oriented design also allows administrators to create "favorites" and "shortcuts".
Customizable Interface Templates - In this new release, administrators can customize templates that can be assigned to individual users. This dynamic new features makes the interface straight forward, easy to understand and intuitive.
Improved Virtuozzo Integration – Now, Virtuozzo and Plesk are seamlessly integrated which allows hosting providers to manage more customers more efficiently. Virtuozzo lets you create isolated compartments, which allow you to handle customers in a more secure and reliable environment.
Domain Aliases - This new feature lets domain administrators set up alternative domain names which act as nicknames for websites and e-mail addresses.
Watchdog 2 – A new version of the software's system monitoring module which monitors diskspace, checks for security problems (Trojans), shows CPU/memory usage statistics and creates reports in case there are usage problems and much more.
Acronis True Image Module - Plesk now comes with a new ATIS module. Using this module, administrators can create server disk backup images without interrupting server operations and perform easy and fast recovery of the entire system.
New Back Up Utility - The improved domain/restore utilities let administrators backup and restore client accounts. Also, administrators can select which client's domains and information to backup/restore. Now domains can be completely restored with the properties they had during the backup. New Backup utilities allow administrators to restore from any version of Plesk which can be valuable for migration/upgrades.
Autoinstaller V3 – This improved feature lets administrators deploy and upgrade multiple servers in an efficient, cost effective manner. The new architecture allows for improved dependencies tracking and increased speed during installation/upgrade. All of this makes the support of new OSes simpler and easier.
More New Features:
Qmail Queue Management Interface
Remote Database Management (Centralized Database)
SPF Support for Qmail (Anti-spam Solution)
MacOS X Support
Faster Support for New OSes
Enhanced support with Table of Contents and References
Welcome screen
PhpMyAdmin for Admin's databases