The leads of the two stories are similarly written but the key information released is very different. The first CNN story, which is titled, "Mother of dead Cuban hunger striker detained, family said," has a lead describing how the mother was detained. The next day a second CNN article, "Mother of dead Cuban hunger striker released," explains in the lead that the mother was released. The updated lead is the most recent news on the story. The information in the two leads differs greatly.
The information in the first article explains what happened to the woman's "hunger striker" son, along with background information on the story. The second and updated article explains what happened to her while she was detained and discusses the arrest in more detail. The second story has more updated information, which makes it more advanced. For example, it confirms that two of the three people detained were released, sharing the most current information.