The Keen Software House forum announces that they are now offering extra-early access to Medieval Engineers for 24 hours before the game enters actual early access via Steam. They are offering this in two forms on the Keen E-shop, the basic game or a deluxe edition which includes the soundtrack, and though they say they will also sell Space Engineers/Medieval Engineers bundles and four-packs, but neither is available yet. They also offer a discount for Space Engineers owners: "Important note: Medieval Engineers will come with 25% two-week discount period for everyone who owns Space Engineers. However, during the 24-hour pre-launch window the discount will apply only for those who purchased Space Engineers through our eshop (we would love to be more helpful here, but unfortunately our eshop has no information about your Steam purchases)." Thanks Wastey.