Sundar Pichai, senior vice president of Chrome, has just announced two cool Chrome notebooks up on stage here at Google I/O 2011. He used a new word to describe them – Chromebooks. Add that to your vocabulary, I have a feeling we’re gonna use it a lot moving forward.

Samsung’s 12.1-inch Chromebook, shown above, has eight-hour battery and sports instant-on performance, like Apple’s MacBook Air, with eight-second boot time.

Acer’s machine, seen below, has a 11.6-inch display, 6.5-hour battery and also boots in just eight seconds. So, how much will those beauties cost you?

The Samsung Chromebook will set you back $429 in WiFi version or $499 for the version with built-in 3G cellular connectivity. The Acer one is a $349 value “and up”, Google said.

Both will be on June 15 via Amazon and the same day in the UK, France, Germany, Spain, Italy and Netherlands. Google partnered with Samsung, Acer, Intel and Verizon Wireless to deliver these machines and plans on co-operating with leading carriers with all over the world as we move forward. More information is available at the official Chromebook site.