The Portal 2 countdown clock we referenced earlier has completed its countdown, and has revealed a cryptic message from GlaDOS that points to a last puzzle in the Portal 2 ARG. Here's the message:
The site is pretty slammed right now, but the site it re-directs to another site, a site that seems like an advertisement for buying the Potato Sack. Apparently, if enough people play the indie bundle from Steam, the game will release early. So if you haven't bought the Potato Sack, now is the time to add to the internet's concerted effort to unlock Portal 2 early.
In other words:
"Be sure to drink your Ovaltine!"