The Lumia 950 and Lumia 950 XL units shown during October 6 event were seen running Windows 10 Mobile Build 10546. Now it seems one change can be noticed in this new build and it is in People Live Tile. You can notice the bigger circles and no gap between the circles. It is however not clear when can we see Build 10546 or any more or less advanced build coming to our devices (Windows Insiders).
If you want to check for yourself watch the continuum demo posted by CarphoneWarehouse earlier.
Thanks Jugs for the tip. Cheers!!