Last night a small pvp raid I was leading to Stormwind from Burning Stepps. When we left Red Ridge Mountains and entered into Elwynn Forest, we all noticed that the people in front of them vanished and then reappeared as we crossed the invisible line between the zones. While strange, if that was the extent of it, I would have no complaints. However, it happened again INSIDE of Elwynn forest on the road as we neared Gold Shire.
My question is, are they testing clustering of the zones or are they clustering inside the zone itself? My understanding was that they were only going to cluster the instances/raids and the continents, not specific zones to avoid the aforementioned event from taking place.