One of players' least favorite aspects of play in World of Warcraft is undoubtedly queue times. While people generally seem to understand why they exist, no one really enjoys hanging out in a queue while waiting to hop into a dungeon, raid, or battleground. While there are multiple factors that contribute to queue times, according to Blizzard it's faction interest in PvP queues that tends to be the biggest influence--not just for servers but for entire regions.
Thus, in the interest of hopefully shortening queue times, Blizzard is offering free faction changes from Horde to Alliance for the Barthilas server. This small initial offering is just a beginning, meant to test the waters. They intend to expand the offer to other servers for testing as well. Presumably, if the opening of faction transfers successfully manages to reduce queue times, the program will continue to be grow.
The free faction transfers for Barthilas will open on Tuesday, May 27th, and continue for about a week. Whole guild transfers are eligible under this program, though guild leaders initiating the Guild Master Faction Change will be charged the initial fee and refunded within 72 hours. It will be interesting to see the potential effect this has on queue times for that server and battlegroup.