The system requirements for StarCraft 2 were revealed at Blizzard's support sites, but later removed it and described it as a mistake, and not meant to be up. The Jace Hall Show's first episode of the third season was released, but did not show anything from the StarCraft 2 celebration shown in the trailer. Reapers' D-8 charges clarified.

“I just wanted to drop in to clarify the situation a bit. As has been mentioned above, some websites have posted system requirements for the StarCraft II beta that were not accurate. The page where this information was found was a placeholder that should not have gone up. We will have more information about the system requirements once the beta starts.” - Avarius

The system requirements could be found on the support sites at Blizzard.com for a while Friday the 29th, but was later removed, and Blizzard told the community that it was not supposed to be there, and it won't be up until the beta starts. Avarius said it in the Blizzard forums, as well as a twitter update

“We have not finalized StarCraft 2 beta system requirements yet, but will do so when beta starts.”

For the speculations, rumors around the forums had it that this was another sign of the beta coming very soon, but now that the system requirements are removed again it makes things more complicated. Though, as Avarius says, the system requirements will be up as soon as the beta starts, and now this was a mistake made by Blizzard, it still shows us that they are working on the support sites, and progress is being made.

The trailer of The Jace Hall Show Season 3 was uploaded earlier this week, and we could all witness the new Battle.net screen welcoming us to the StarCraft 2 Beta, with the developers of StarCraft 2, including Dustin Browder and Chris Sigaty, celebrating with Jace Hall and his crew around a table.
The episode has now been released, but shows nothing of that nature, except some clips from a meeting with the Diablo 3 developers. Nothing StarCraft 2 related in this episode.

Reapers' D-8 Charges
Earlier one of Blizzard's community managers, Kapeselus, clarified how the reapers' D-8 charges work, and explained that they do not take any damage, and can't be killed, but it takes them two seconds to explode, so you will have a chance to run.

“In the current build you cannot destroy D-8 Charges. By that I mean that you can select them, but they are indestructible (they don't have HP like other units do, just like units caught by Arbiter's Stasis Field in SC:BW for example). If you are playing against Reapers though, you can still dodge the charges, as it takes them around 2 seconds to blow up.” - Kapeselus

Links
Forums.battle.net - System requirements - false
IGN.com - The Jace Hall Show
Forums.battle.net - Reapers D-8 charges