Press release from the satellite operator:https://www.apstar.com/en/news/successful-launch-of-apstar-6d-satellite/
CZ-3B/E is not a new variant of the rocket and in fact is an old designation for the series. CZ-3B/E was first introduced in 2007 and includes three variants: the CZ-3B/G2, CZ-3B/G3, and CZ-3B/YZ-1.If you look into older articles about Chinese launches, this designation was already used.At the moment there is no definite established relation between the 50 kg weight reduction on the third stage and the Palapa-N1 failure.
CZ-3B/E is not a new variant of the rocket and in fact is an old designation for the series. CZ-3B/E was first introduced in 2007 and includes three variants: the CZ-3B/G2, CZ-3B/G3, and CZ-3B/YZ-1.
Debris from a Long March 3B which launched the APSTAR-6D communications satellite from Xichang on Thursday. Dangerous to be close to an engine that used toxic hypergolic propellants. Source: Guangming Daily/Weibo https://m.weibo.cn/status/JaItqv2i9