I also saw the video of Adobe XD and really surprised that all the features are bundled in only one app. Actually, you can see the “XD” symbol at the end of my article LoL.
However, we have to wait for the pricing, since XD is just one app but Sketch needs Silver (the next version of Craft that has the prototyping feature). So we will talk about this again :)
What is your opinion on this? I guess you already tried both of them.