SpaceX's launch of the Falcon 9 from Space Launch Complex 40 (SLC-40) Cape Canaveral Air Force Station, Florida, USA. (EPA/SPACEX)

Update: Elon Musk had some strong words for his biggest potential client today. Check out the full report here.

At 17 minutes past midnight Eastern time Friday, reporters got a cryptic e-mail in their inboxes: "Elon Musk will make an important SpaceX announcement today, Friday, April 25 at 1 p.m. ET at a Washington, DC venue to be announced shortly. The announcement will be followed immediately by Q&A."

That was it. No further explanation. What has the entrepreneur got up his sleeve? Has he found a way to loft rockets into space on Tesla batteries? Has he made first contact with aliens? Maybe he is an alien?

Whatever it is, we've got it covered. I'm heading to this event later this afternoon, so check back here — or on Twitter — for updates.

The latest announcement comes one week after SpaceX successfully launched, for the first time, a reusable Falcon 9 rocket. Here's a video of the new technology in action:

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