[jimbobthrowawy]

Some of those devices you describe were different consoles and not just variants.

Gameboy color had games exclusive to it that wouldn't run in a gameboy, the DS/DSi/3ds were different consoles, even if few DSi exclusive games were released.

[mattl]

Yep, but part of the same line often and I’m sure I missed some devices out. The 64DD for example.

The point is that Nintendo has basically always done this.