Snapshot gives us a preview of the upcoming Minecraft version. Indeed, we will introduce to you all of the updates we have. The weekly snapshots post are named by using the exciting format YYwWWx. YY is the two-digit year, w simply stands for “week”. WW is the two-digit week number within the year. And x is a unique letter identifier – starting with “a”, then “b”, and so on – for when there is more than one release per week. The launcher will only download the set of current version and pre-releases.