Yep, hardware says:
Featuring a Rockchip 3128 SOC microprocessor with 256MB DDR3 RAM and 256MB eMMC fixed internal storage. Wired CX40+ Joystick with serial port connector.
So probably Linux plus emulators. Hope they respect licenses.Thing is Atari has been through several bankrupcies and name changes, and I think currently they are just expliting IP and licenses, including failed business like hotels, NFT tokens based games... so I'm not expecting anything great.