Because Walmart likes to release its most jaw-dropping TV deals as a handful of pre-meditated doorbusters, more shoppers will be waiting in the wings for the clock to strike a certain time (rather than calmly perusing several pages of TV deals) — which means TVs selling out is more likely and time is of the essence.

Right now, you can get the Roku Ultra LT for just $34 at Walmart. That's one of the best early Black Friday deals we've seen on a streaming device. It might even be the best yet. But act fast — this deal is only at Walmart. And it's only available until it sells out. With 1,000+ already sold, that could happen before Black Friday.

Walmart announced Monday its plans for its second Black Friday sales event and for its Cyber Monday sales event. Here's what to know.