I rarely ever use Google Latitude, although I do use Foursquare, so when Google announces new changes to Google Latitude, I am not always a 100% sure what is new and what is not.
- Check out the new way to access your friends list, personal location history, and more.
- Manually update your location from a computer by pressing 'Update' next to your name
- In Location History, playback your location history from a select range of dates by pressing the play button on the bottom left hand corner of the map
Here are screen shots:
Forum discussion at Google Maps Forum.