HP has released an update for the iPAQ hw6500 family as well as an update for the iPAQ foldable keyboard.
The HP iPAQ hw6500 Mobile Messenger Series Storage Card Rename Utility will allow you to change the naming convention of either the SD or mini-SD card to “Storage Card” to let you store Inbox Attachments to the card. This fixes an issue whereby you cannot do this with the current storage card names.
The iPAQ foldable keyboard update adds support for Windows Mobile 5.0.
Source: Pocket PC Thoughts