Every weekend the luxury goods vendor will visit Ciceros in Coldharbor. You can buy luxury decorations from him, he has a rotating inventory and is similar to the cyrodiil vendor.
Sorry to be the bearer of bad news, but the furniture only comes with the infused trait or impenetrable if you use AP. No one wants to buy a bed for 50k or 125kAP to find it's centred around being impenetrable.
The big question though is will we be able to see what the items look like before buying them? Maybe the items will be displayed near the vendor? Or is there some preview mode for decor?
I'm guessing it will be like the Cyrodiil vendor and he will show up later tonight. I think the Cyrodiil vendor shows up at 7 pm CST for me. The patch notes don't specifically say what time.
I don't think we will get a preview of the items for sale. We don't get a preview of the achievement furnishings, so I can't see this being any different.