Product phased out but not shipped yet

I recently purchased a Samsung Q950A soundbar and it was supposed to ship on Monday. It is now marked as delayed. When I called support they told me it was now back ordered. 

My question is, a new model has replaced the Q950A and looking online it appears that Samsung is no longer shipping the Q950A to the market as it has been officially phased out. In the event the one I purchased cannot be provided, what will happen? Will they cancel my order and refund me? Will they just upgrade me to the newest model? Will it just sit in limbo forever if they can't get the product? 

Thanks in advance for your help!