From MyTreo.net today:
Palm contacted us recently and asked that we share with the community three software updates. Palm has released a fix for a daylight savings time change issue, which could affect some Treo owners. There is an update for Outlook 2007 users that improves hotsync operation. Lastly, Palm released an update of Palm Desktop and Hotsync Manager that allows them to work with Microsoft's new Windows Vista operating system.
Get these updates if you are running Windows Vista, Office 2007, or care about being on time ;^)