Fear not though, Sony fans. If this was indeed true, then flagship titles like Resistance and Rachet & Clank would remain on Sony's console, because they're Sony-published. But, what ever title Insomniac Games is making in the future, then they could release it on another platform.
Now, here's the thing if you're confused: Sony doesn't actually "own" Insomniac Games. So, if they decided to bolt to other consoles, then there would be nothing stopping them.
We'll have more if this rumor comes true.