As far as potential catalysts for tech giant Apple (NASDAQ:AAPL) go, it's the iPhone 6 and then everything else.

Source: Apple

Not that Apple doesn't have plenty of other growth drivers that should help power Apple shares higher in the months and years ahead. More accurately said, Apple's iPhone 6 opportunity is simply so immense that its positive impact on Apple remains simply tremendous. And thankfully for Apple investors, they recently received yet another sign that the iPhone 6 has gone into production, courtesy of retail behemoth Wal-Mart (NYSE:WMT).

Wal-Mart sends iPhone prices sinking
Announced late last month, Wal-Mart is slashing prices for both of Apple's most recent smartphones -- the iPhone 5s and 5c. This tactic isn't particularly abnormal for Wal-Mart, as the company has reduced the pricing on Apple's smartphones for promotional periods such as the holiday season in the past. However, according to Wal-Mart, these recent pricing changes are here to stay.

The implication?

Although it's no sure thing, it appears that Wal-Mart is now dead set on clearing its channel inventory of Apple's most current iPhones ahead of the launch of the iPhone 6 later this year, especially taken in tandem with other reports claiming Apple's iPhone has entered production with its East Asian manufacturing partners. In the following video, tech and telecom specialist Andrew Tonner discusses Wal-Mart's recent moves and what they mean for Apple investors.

Andrew Tonner owns shares of Apple. The Motley Fool recommends and owns shares of Apple. Try any of our Foolish newsletter services free for 30 days. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.