[Update: Apparently the song is available right now. GO GO GO!] 

This news is not a lie! "Still Alive", sang by GlaD0S at the end of Portal, is making its way to Rock Band. Xbox 360 Rock Band owners will be able to download the track tomorrow and PS3 owners will get the song on April 17th. The best part is that the song will be completely free for both platforms. 

So why such a delay with the PS3 version of the track? The PSN store is currently undergoing remodeling, so nothing will be available for a few weeks. This is probably going to be the only good thing coming out on April 1st in the videogame world. Everything on the Internet tomorrow will be a lie for the most part.

So are you as giddy as a monkey on crack at this news like me? PR after the jump.

ROCK BAND Media Alert

ROCK BAND(tm) TO FEATURE FREE DOWNLOAD OF

"STILL ALIVE" FROM VALVE'S PORTAL(tm)

This is a triumph ... Harmonix Music Systems and MTV Games have teamed
up with Valve to bring the song "Still Alive", released as part of The
Orange Box collection of games on PC, 360 and Playstation 3, into the
Rock Band library.  And, as icing on the cake, the track will be
available as a FREE download on April 1 for the Xbox 360 video game and
entertainment system from Microsoft, and April 17 for the
PLAYSTATION(r)3 computer entertainment system.

Written by Jonathan Coulton and originally performed over the end
credits of Portal, the experimental single-player game in The Orange
Box, "Still Alive" found its way into the heads and hearts of gamers and
quickly became a cult classic.

"While the cake may be a lie, the free download of "Still Alive" is
confirmed truth," said Greg LoPiccolo, VP of product development at
Harmonix. "'Still Alive' is an awesome song that brings together great
gaming and great music. We've teamed up with Valve to deliver a free
download of "Still Alive" as a "thank you" to our fans for their
incredible support."

"Rock Band has lit the industry on fire by opening a new market for
cooperative musical gaming," said Doug Lombardi, VP of marketing at
Valve. "We're delighted Harmonix has selected the track for inclusion in
the growing library of tracks available for this phenomenal title."

With the addition of "Still Alive" to the Rock Band library, there are
now more than 70 tracks available for download in addition to the 58
tracks in the original game.  To date, gamers have purchased more than 6
million downloadable songs for Rock Band since its launch on November
20, 2007.

Downloadable content for the Xbox 360 will be available via Xbox LIVE(r)
Marketplace using Microsoft Points and is downloaded directly to the
Xbox 360 hard drive.  Downloadable content for the PLAYSTATION 3
system's version of Rock Band will be available on the
PLAYSTATION(r)Store through the free PLAYSTATION(r)Network and is
downloaded directly to PLAYSTATION 3 system's built in hard drive.