It is documented here on the wiki due to being officially-released content by Mojang Studios, even if not present in a final version.
|Catches fire from lava||
The burnt-out torch is a joke feature. After a normal lit torch burns out, the burnt-out torch appears.
A burnt-out torch breaks instantly and drops itself when broken using anything. Tools do not lose durability when used to break burnt-out torches.
When the torch is placed it will, after some time[needs in-game testing], turn into a burnt-out torch.
|Java Edition Alpha|
|v1.2.0||October 4, 2010||Torches burning out was mentioned by Notch to be in the Halloween Update, but was postponed and later cancelled.|
|2.0||Added burnt-out torches.|