Early Black Friday deals are already rolling out, with more new sales showing up every day. For 2021, there's concern whether shipping issues will mean less stuff on the shelves for the holidays. As we've already been hearing for months, the global supply chain is seriously backed up with bottlenecks occurring at key points. Hoping to deal with an already difficult situation, retailers stretched out the shopping season as much as they dared, what with shipping timelines stretching to frustrating levels. These supply problems are supposed to be felt acutely in technology, or so the market watchers say.