Blizzard has opened a Project Blackstone teaser site for StarCraft 2: Heart of the Swarm. It filed a domain registration for the name back in November - we covered it here. The ARG site has now been cracked.
The site can be found here, and it bears a Terran militaristic insignia and a log-in entry field that spews up some garbled code. PCGamesN ran it through a HEX translator and got the password Y7_$0>0k_3< $m.
The result is an email conversation between Talen Ayers, a Blackstone Research employee and Dr. Helek Branamoor. They discuss what the site calls "surprising similarities between the zerg larva's pluripotent cellular structures and our own embryonic stem cells"
I'm a StarCraft virgin folks so I'm baffled.. But hopefully this excites you fans out there.