Retailers already upping the ante for Black Friday

WalMart will kick off its Black Friday deals earlier than ever, with many special holiday promotions beginning at 8p.m. on Thanksgiving.

That's two hours earlier than last year! {}Other deals will be staggered throughout the night.{}

In an effort to curb shopper frustration, the world's biggest retailer is also guaranteeing that shoppers in line at a certain time on Thanksgiving, will get their hands on three hot deals for the holidays.

Several stores, such as Best Buy and Sears,{}released previews of their Black Friday circulars, but WalMart released its full 45 page ad Thursday morning.