I'm quite struggling to believe this but Merlin have posted this on their facebook page after I asked them about the capsule:
"Hi there Worldwide, Nick,
We have changed our capsule design for this year and the version we will be using takes slightly longer to produce however we will be sending an update email to confirm availability to all Passholders by the end of this week.
If you would like to discuss this further with a member of our team you can email us at [email protected]
How they can have a roller coaster ready in time but can't organize to have a few thousand plastic cups ready is beyond me. On the plus side my teeth are over the moon that they won't be taking a battering tomorrow