The Atari XE Video Game System was based on the Atari 65XE computer, the XEGS is compatible with the existing Atari 8-bit computer software library. Additionally, it is able to operate as either a stand alone console or full computer with the addition of its specially designed keyboard. It was released on November 1st 1987 for $199.00, which would equate to $432.05 today.
The Atari XEGS was release in November of 1987, however a specific day could not be found.
November 1st, 1987 Source: videogameconsolelibrary.com
Came with a standard joystick, a light gun and a pack-in light gun game called Bug Hunt.