You’d think that with The Binding of Isaac: Rebirth being out, the remake of the original The Binding of Isaac, there would be no new content for the original game from now on. But you’d be wrong.
Florian Himsl, Isaac’s programmer, has shown off a new build of The Binding of Isaac: Wrath of the Lamb on the YouTube channel “GameSquid.” Himsl reveals that the update contains a new Hard mode that has elite versions of each of the bosses. Himsl says that he’s already reworked 10 of the game’s bosses.
In the video, the elite versions of The Hollow and The Duke of Flies are shown. These new, harder bosses are recognizable by being white in color and by the fact that they drop half a white heart when beaten.
You can see in the video above that The Hollow is also more aggressive, has an extra head that leaves creep behind it, and is generally tougher. The Duke of Flies coughs up white flies to protect itself and, when defeated, produces many more flies than before.
This update will only be available with Wrath of the Lamb DLC on the original The Binding of Isaac on PC. Whether it comes to to Rebirth in some form later on is unknown. That said, Edmund McMillen is working on a big update for Rebirth right now with lots more content.