PC Magazine reports on the features of upcoming Blackberry OS4.5 upgrade:

• BlackBerry Maps with Points of Interest (H) [Google Maps is better]
• Improved media player with playlist support and automatic playlist generation (H)
• Voice note recording (H)
• Video recording on Curve models (H)
• Streaming support for YouTube and Sling Player (H) [I like this..]
• Microsoft Office document editing with DocumentsToGo (H)
• Native format attachment downloading (S)
• HTML e-mails (S) [Yes!!]
• Over-the-air device upgrades (S)
• Free/busy calendar lookup (S)
• Searching the server for old e-mail messages (S)

Items marked with S require a server upgrade, while H is handheld only.