I read a post recently that quoted Winchester customer service... "October."
I read a post, I think on shotgunworld.com, that said "3 months."
About a month or so ago I asked at the local big-time gun store and they said "We're still waiting on some we ordered from them last year."
I promised my buddy, and personal duck guide, a new shotgun and we are impatiently waiting to see the lightweight SX3. He likes close, very close, shots and used an old 21" Remington 870 this year. I weighed his 870 = 6.25 pounds.
John