I called my SIL who works in layaway at our
Walmart. She said the way the new system is set up is anything that goes on sale in the flyers is automatically adjusted in the layway system. Now as far as BF goes she is not sure if the UPC will be different or not, they have not been told anything yet. All she knows right now are the BF early bird specials are on pallets and shrink wrapped. They will be cut open at opening time and the way their store is doing it is special lines are set up to cut down on the chaos...so you will que when you come into the store for whichever BF special you want...computer, tv, gameboy, etc. She said they did this last year and it worked really well.
As far as what she has been told the BF early bird specials are ONLY available in the store, not online. But the regular sales items will be online too.