So here is the deal..Silver members WILL get access to this..probably in about a week. This is going to happen more and more (Gold getting things before Silver) so you may want to think about upgrading if you want all the latest and greatest trailers, demos etc.
Right! Because why should Microsoft market to you for free when they can get you to pay them to market to you? Mark my words: demos and trailers costing Live points is just around the corner.