By the looks of it, the new Dyson Ball will use a slightly enlarged version of the motorhead used on the DC35 stick vac with a smaller motor, and thinner brushroll compared to that of the current DC25.....although these could be patent drawings for the successor of the DC24, not DC25.
As with the DC24 / DC25, the cleaner head is fully removable by the user and hence a range of market variants *
could* be produced, if required, regardless of what is shown in these drawings.
It is a question, if it would be available in small and large models, like with the DC24 / DC25. If it’s using a conventional motor, this would be challenging for a smaller model. But if using the Dyson Digital Motor v2, as used in the Digital Slim, more feasible. Although one further point – these drawings show a post motor filter cover and hence suggest a conventional brushed motor, for a full-sized cleaner model at the very least.