Although it seems strange to not have the Lsot Planet games on the 360 maybe they are diverting some of theri IPs abway from the 360 because they feel it is waning in Europe or there is too much competition in that genre on that console.
While I would love a Zack & Wiki 2 I don't think that they have had enough sales yet to make a clear indication. I think the reviews it has recieved caused the decision if there has been one already.
A discussion on what it would take for Z&W to be profitable is here:
http://www.vgchartz.com/forum/thread.php?id=9631
Now they may decide to sequelize it without it being profitable, but I doubt it.
Final* Word on Game Delays:
The game will not be any better or include more content then planned. Any commnets that say so are just PR hogwash to make you feel better for having to wait.
Delays are due to lack of proper resources, skill, or adequate planning by the developer.
Do be thankful that they have enough respect for you to delay the game and maintain its intended level of quality.
*naznatips is exempt
