The term "Keurig" refers to a brand of coffee makers that was first introduced in 1998 by the American company Keurig Green Mountain. While the brand itself is not new, the specific models and versions of Keurig coffee makers have been continuously updated and released over the years.

Keurig initially gained popularity with its single-serve coffee brewing system, which uses specially designed coffee pods called K-Cups. These K-Cups contain pre-measured coffee grounds and are inserted into the coffee maker, allowing users to brew a single cup of coffee quickly and conveniently.

Since its introduction, Keurig has released various models of coffee makers, each with its own set of features and improvements. For example, the Keurig K-Classic, released in 2013, offered a larger water reservoir and multiple cup size options compared to earlier models. The Keurig 2.0, introduced in 2014, featured a touchscreen interface and the ability to brew both single cups and carafes of coffee.

Keurig has also expanded its product line beyond coffee makers, offering machines for brewing tea, hot chocolate, and other beverages. They have introduced different models tailored to specific needs, such as the Keurig K-Mini, a compact and portable coffee maker ideal for small spaces or travel.

References:

1. Keurig: Our Story - https://www.keurig.com/content/our-story
2. CNET: Keurig K-Classic review - https://www.cnet.com/reviews/keurig-k-classic-review/
3. Digital Trends: Keurig 2.0 review - https://www.digitaltrends.com/home/keurig-2-0-review/