Usually I would recommend to take that information with a grain of salt.
However, in his defense, Blizzard has stated that there will be an upcoming change to Battlegrounds coming soon, and in a round-about way they seemed to convey that it will not be Siege Weapons (any mention of them is now officially gone from the upcoming changes pages). Since there is little else that could be added to Battlegrounds that would warrant such a post, the popular opinion is that this will be a type of cross-server implementation (and it probably will be).
So while the exact specifics might be wrong, I expect that we will see some kind of cross-server implementation sometime "soon". We will just have to wait and see if it's 16 servers or did Steve simply tried to pass his educated guess as a leak of info.
However, in his defense, Blizzard has stated that there will be an upcoming change to Battlegrounds coming soon, and in a round-about way they seemed to convey that it will not be Siege Weapons (any mention of them is now officially gone from the upcoming changes pages). Since there is little else that could be added to Battlegrounds that would warrant such a post, the popular opinion is that this will be a type of cross-server implementation (and it probably will be).
So while the exact specifics might be wrong, I expect that we will see some kind of cross-server implementation sometime "soon". We will just have to wait and see if it's 16 servers or did Steve simply tried to pass his educated guess as a leak of info.