That site is just a teaser, not a full list of changes - it focuses on the imbuing system as its crafting tease but there are many things in the expansion that don't show up on that site.
There are a lot of new craftables and even a few fairly extensive whole systems such as basketweaving and staining (information can be found in the playguide). Almost all the crafts get something new (I believe the only crafts that do not have new content are fletchery and cartography).
Although I poked through all the menus, I do not have a full spoiler list compiled.