I got knowledge that some fans were concerned that the Power Functions XL motor was going to be discontinued; after all, the last set it came in was the 8258 Crane Truck, in the relatively far away year of 2009. This is what TLG had to say on the matter:
The XL motor will not be discontinued. It will remain part of our core motor assortment. It is available through shop.LEGO.com and will also be used in future products.
Although I didn't doubt that this motor would continue to be available, it's always reassuring to have an official confirmation. Plus, the above statement probably means we will soon see another XL-powered set!