@tales_ch has also posted pictures of what seem to be the latest of the prototypes. You'll note a few changes and touch ups to the figures, especially for Lloyd's. The Tales Chan Twitter also noted that there will be a sort of announcement by Alter at their booth, so this could possibly be... a new figure, perhaps?
The Tales of Symphonia Lloyd Irving figure and the Tales of Zestiria Alisha figure are both by Alter, while the Tales of Zestiria Sorey figure is by Kotobukiya. We first saw a glimpse of the Lloyd prototype last Tales of Festival 2014, with the Sorey and Alisha figures also revealed during the event.