Surprise! Google Drive Storage is now 15GB

This came a surprise to me when I found that I have 15 GB free Google Drive storage. However after digging around the information online and on closer inspection of my account, this was not really an increase but rather a combining of storage from the various storage. Some blogs said the Drive storage account was increased because it felt like you gained 15 GB of Google Drive / Picasa storage and 15 GB of Gmail storage. So let's look at this closer.