Pepsi stock hit an all-time high last month, but there's a new cola war brewing. 

SodaStream's (NASDAQ:SODA) enlisting bigger appliances in its battle against Coca-Cola (NYSE:KO) and PepsiCo (NASDAQ:PEP), and the soda giants better be paying attention.

SodaStream's partnership with Samsung has delivered the first refrigerator that uses SodaStream technology (and CO2 refills) to deliver carbonated water from the dispenser. This isn't science fiction. The refrigerator is shipping now, and Best Buy (NYSE:BBY) is already stocking the state-of-the-art kitchen appliance. 

Now, it isn't cheap. Samsung's suggested retail price is $3,900. Best Buy is selling it for $3.700. However, as the technology gets cheaper, and other makers hop on the home-based carbonation bandwagon, it could mean a dent in sales for the soda giants. This could naturally hurt Pepsi stock as it leans more on its salty snacks business if the fizzing fridges take off. 

In this video, longtime Fool contributor Rick Munarriz reveals some of the gems that SodaStream announced during Tuesday's Analyst Day presentation. More models? Flavored soda dispensed in the future? Things are starting to get bubbly in the pop scene.