Hibernate 4.2.21 发布了，该版本主要是 Bug 修复，包括：
Bug
[HHH-5255] - Merge detached entity failed when the instrumented lazy property is initialized
[HHH-7573] - Lazy properties are not processed properly after a PreUpdate callback
[HHH-9928] - Pending put leaks when the entity is not found in DB
[HHH-10182] - Backport HHH-7898 and HHH-10005 for JTA environment only
下载地址：http://hibernate.org/orm/downloads/
来自:开源中国社区
