FarmVille and Zynga have added in new Shipping Licenses to the game! For now, you can purchase the Lighthouse Cove license for 75 FVC or you can wait just a bit longer and it will be free WITH a Level 10 Cove. Best bet for now is to wait, and make sure you have a level 10 Cove.
What does this mean for the Winter Wonderland? I am guessing that at some point AFTER (way after) we finish WWL and move on to Hawaii we will be allowed WWL storage transfer. If you ask me, its a day late and a dollar short, but, Zynga likes to act like they know what players want.