Do Mario Party's bosses change randomly or is this article wrong?

[CM30]

http://www.siliconera.com/2012/03/25/mario-party-9-playtest-a-night-at-blooper-beach/

They seem to be playing Blooper Beach, but...

we faced our first boss battle. It was against Dry Bones and was called Deck Dry Bones.

and

It was time to face King Boo in King Boo’s Puzzle Attack. It’s a basic match-3 game, only everyone’s trying to match three Mario items at once to damage King Boo.

These two bosses are found in Boo's Horror Castle instead.

Does Party mode change this or is the article wrong?

 

[tdimodel6]

i just got the game and i got Lakitu and Wiggler in Toad road and Whomp and Big Bob-omb in Bob-omb factory, so i dont think they will be different in party/story/advanture or w/e it is mode. i think its fake

 

[CM30]

Okay, thanks. Anyone tried party mode just to be sure?

 

[Super Leaf]

In Story Mode, the bosses are always the same
In Party mode, the captain gets to choose from 3 Bosses

 

[tdimodel6]

well i got Dry bones and King Boo in horror and Blooper and Cheep-Cheep just in bloop beach just now