New PVP Maps in World of Warcraft

Yes, it bothers me that raiders in World of Warcraft get new content every few months while pvpers get new content every few years. An admin of the MMO Champion BBS made a post yesterday about panels hosted by Blizzard staff at the World of Warcraft Invitational. Seems that there will be a new map with lots of siege engines (no word on whether or not they're engineers only), and it looks like the shredder will be back, as well as active versions of the inactive decorative ones we see scattered around the game world.

If they're going back to day-long battlegrounds, why don't they restore Alterac Valley to its former glory? If it doesn't take a day to play this new map (the ONLY new map in 2 years), how much time will players actually have to get and use these new toys? Will it be worth it to get them, or is it easier/faster to win the battle without them?

A long, detailed list of developer notes (the blue section) is included in the BBS thread, so go have a look-see. It covers not just the new battleground but also arenas and some general questions.