CEO Hyun-suk Kim told the Korea Herald Galaxy Home is "planned to be launched in mid-second half of the year," or in other words, Q3. That means it'll be around a year between Samsung announcing Galaxy Home and starting to sell it. Kim described the device as "the center of Samsung's home appliances," suggesting it's an important part of Samsung's smart home strategy. However, he declined to discuss reported plans for a smaller version of the speaker.
Given Galaxy Home's apparent significance to the company, it might not be such a bad idea for Samsung to give itself plenty of time to get the speaker just right. When we tried Galaxy Home at CES in January, we found it to be very limited in what it could do and in need of some more work before Samsung brought it to market.