Unlimited amount of data can be copied (unlimited = free RAM)
Support for Unicode
Paste/Copy Hex Dumps
Progress display
Additional native clipboard format for HMTL and RTF, allows pasting of formatted text into apps like WordPad or Mozilla Thunderbird (instead of the source code)
Searching supports true Unicode (not only ANSI subset), allows searching of special characters like those in the DOS-char set
Backup-enhancements:
Progress display when creating backup
Backup creation can be cancelled
Warning when there is no place for a backup
Overall better Unicode support
Generally added progress display for all lengthy operations