Given the amount of time that's passed since the end of Accel World season 1 without any sign of a second season, it would appear there are no plans to continue the anime series. That said, the franchise has continued on with various video games and other spinoffs, so there's still hope.

What is the ending of Accel World?

Accel World will end with Volume 30, working title Uninstallation Of The Universe. Haruyuki will end up together with KYH, who has never lied about her real name - it is Kuroyukihime. Her last name is Kirigaya.

Is Accel world connected to SAO?

Sword Art Online and Accel World exist within the same universe but at different times. Similar to Batman Beyond being in the future of Justice League and Batman the Animated Series. The technology in SAO is the first gen version of the tech in Accel World.