(CNN) - Wal-Mart announced price cuts Wednesday on the Samsung Galaxy S4, as well as for Apple's 16-gigabyte iPhone 5s and 5c, for customers signing two-year contracts withAT&T (T, Fortune 500) and Verizon (VZ, Fortune 500).
The move will likely fuel speculation that Apple(AAPL, Fortune 500) is planning a new iPhone release for this spring, rather than its usual fall launch. Retailers often slash prices to clear out inventory ahead of a new product launch.
Samsung unveiled the new Galaxy S5, successor to the S4, last week. The phone will hit stores in April.
The sales may simply indicate that the smartphone market is approaching saturation, which makes it harder for new products to replicate the success of previous offerings.
As of January, 90% of American adults had cell phones, and 58% had smartphones, according to the Pew Research Center.
The adoption of smartphones is expected to taper off in late 2015, according toAsymco industry analyst Horace Dediu.