How? Does it combine a better compression algorithm than H.264 with less patent issues than Ogg Theora?
Even then, the question remains whether Apple will allow the standard to be implemented on their products.
With the danger of being thrown into the OS flame war thread, I warn you: don't use Apple products. And if you already do: try to hack it. If you own a product, you should be in full control of that product.
I don't have any of these mobile gadgets, but if I ever want to buy one, I will go for one of these Android or other Linux-based ones, and search on the Internet which specific models allow me root-level control of the system.