HBO posted on their True Blood page:
Psst! Watch the Season 5 finale with Interactive Features at HBOGO.com or on your iPad to see a bonus scene teasing Season 6.
The image above shows Sookie and Jason! Looks like they are outside of the “Stake House” location?
On the True Blood page they have this snippet:
The video for the bonus clip is on this tumblr page:
Here are some of the caps from the bonus clip.