The company said in a blog post that Ice Cream Sandwich will hit the Galaxy S II in several European countries today, including Poland, Hungary, and Sweden, as well as South Korea.
The mobile OS update for the Galaxy S II will then "gradually roll out to other markets," Samsung wrote.
ICS will also be available for the Galaxy Note, the Galaxy S II LTE, the Galaxy Tab 8.9 and 10.1, but details on that "will follow soon," Samsung said.
"We expect that our customers will enjoy an enhanced experience with their Galaxy device through this upgrade. Samsung is committed to satisfying our customer needs," JK Shin, president of Samsung's IT and mobile communications division, said in a statement.
Samsung's Galaxy Nexus smartphone was the first device to be released with Ice Cream Sandwich. It made its debut on Verizon Wireless here in the U.S. on Dec. 15;