This is the first flagship 4x4x4 released by QiYi in around 2 years and the last 4x4x4 they released was the Valk 4 which was quite disappointing. This appears from pre-release reviews to be faster but still feel similar to other X-Man cubes. I expect it to be available in early June 2021 and will endeavour to get it in stock as quickly as I can.