Minecraft – Did the “I” in the debug screen get removed

Straight from the Minecraft Wiki:

Entities encompass all dynamic, moving objects throughout the Minecraft world.

The wiki entry on the debug screen has more info (paraphrased):

+------------------------------------------------------------------+
| Name           | Legend                                          |
+----------------+-------------------------------------------------+
| E (second row) | Number of rendered entities over total entities |
+----------------+-------------------------------------------------+

So, you are partially correct:

• Entities are mobs (friendly or hostile), items, and quite a few more.
• The 'number rendered' is the number of rendered entities

The location of Shrek's house used to be X: 76807 Z: 51209, but it has been moved to X: 78089 Z: 49919.

Source: LOTR Minecraft Mod Wiki