I'm guessing the answer is "no", because I've been scouring the internet all morning for some source or report on this. Sadly, I can't find anything. All I have to go on is an email I got from Tyrone Rodriguez from Nicalis (publisher of Cave Story on WiiWare/DSiWare, and co developer of Cave Story 3D) stating that 04/29 is the birthday of Daisuke "Pixel" Amaya (creator of Cave Story), and that something special happens if you boot up the game on that day (but only if you downloaded the patch for the game that came out last year).
For various reasons, I don't have access to a Wii at the moment, and likely wont gain access to the console until Monday. I've asked my friends on Twitter to help me find out what the deal is, and so far all I've heard some stuff about the title music, and not much else. Specifically, I heard from Nintendude4Life that the new opening track only shows up when you select "new" under the game's music option, and that it sounds like "calmer" remix of this unused track from the Cave Story score. From there, the great Nintendaan uploaded a video of the new track (seen above), because he is great.
If any of you can help me to find out if there is more to this Easter Egg than some new opening theme music, I'll love you forever.
Jonathan Holmes is the most lovable Associate Editor on Destructoid. Catch him on videos, original editorials, and on back episodes of the Destructoid Show and MTV's Road Rules. Jonathan is a retro gamer's gamer.
Likes
Mega Man 2, Resident Evil, Katamari Damacy, Bit.Trip, Metal Slug 3
Meet the rest of the team
I didn't even know there was a patch for the game. I don't know that I've bothered to look at WiiWare since not horribly long after I picked up Cave Story, since there was never anything worthwhile there and the release lists online never showed anything that looked remotely interesting.
I was looking for some interesting post on Beta nature of business and this is what I found here, that's simply great. I am inspired by the writing style of author. I will be visiting in future to extend my knowledge. Thanks
Portland Christian Counseling
Thanks for making such a cool project. I've been checking the site for the Windows version, but I never left a comment about it. I know you are working hard and doing it for free so you shouldn't feel rushed or anything.
Romantic Cabo
Destructoid is an open discussion community. You don't need to "audition" to post a comment - just speak your mind. We respect differing opinions on the site, so have at it. Be smart, funny, insightful, clueless, or cute -- but back it up with substance. Keep your cool, keep it fun. We only ask that you act respectfully and above all: don't be a troll and ruin it for everyone else. Don't bring down gamers or we'll, you know, gently shoot you in the face and stuff you into a flaming mailbox. Each comment is your opportuntity to make this community awesomer. Is that even a word?
Avoiding the banhammer only requires common sense: spamming, trolling, racism, NSFW stuff, and other forms of sucking will not be tolerated. If anyone is griefing please report abuse. Be good. Don't suck!
Contest:
2:00 PM on 04.30.2011 | 
You can include a lot of content in very little data. It is all in how you use all that space.
Midi files just use certain amount of kilobytes in space, so a dding a few tracks in 40 MBs is fairly easy.
Portland Christian Counseling
Romantic Cabo