Google has updated the Google Maps app for Android to version 5.9.0, bringing continued improvements to Transit Navigation, along with a new Labs feature. Here's a rundown of what you'll find in the latest version --

• Voice and ring tone notifications for Transit Navigation (Beta)
• Tablet support for Transit Navigation (Beta)
• 'Bubble Buttons' Lab to add call and navigate buttons to results on the map (see above)

The Transit Navigation changes should be welcomed by anyone that's ever missed their stop on the train or bus, and we always like a new Labs feature to play with. Head to the Android Market to grab the latest update, or use the QR code after the jump.