A lot of rumors that it will be happening today. Jeff Foust has the story, with some broader context:

While Virgin may make a flight test of a crewed suborbital vehicle as soon as Monday, another company isn’t far behind. Just down the flightline from Virgin and Scaled at the Mojave airport, XCOR Aerospace is continuing work on its Lynx suborbital spaceplane, with plans to begin an incremental series of tests later this year.
“The concept design is done. I know what the approach is, I can put the numbers together,” Greason said of XCOR’s orbital vehicle plans.

“We’re not done yet,” said Jeff Greason, CEO of XCOR, said of Lynx in a presentation at the Space Access ’13 conference in Phoenix earlier this month. “It’s not because of any particular roadblock, but it’s just the usual 90-90 rule of project management: the first 90 percent takes the first 90 percent of the time, and the last 10 percent takes the other 90 percent of the time.”

While development of SpaceShipTwo’s hybrid rocket motor is widely believed to have been the major cause of that vehicle’s delays, Greason said propulsion is not an issue for Lynx. “Propulsion-wise, we’re in great shape,” he said, saying that the four engines, powered by liquid oxygen and kerosene, are now integrated into the fuselage of the Lynx Mark I prototype.

Instead, Greason said, XCOR has been working on a variety of other issues with the Lynx, including tweaks to the vehicle’s aerodynamics, avionics, and landing gear, as well as the production of the vehicle’s wings and a second fuselage. Flight tests are slated to begin in the second half of this year.

It just occurs to me that while the biggest difference is that XCOR was funding-constrained while (as far as I know) Virgin Galactic was not, both have also been delayed for symmetrical problems. XCOR is a propulsion company trying to build an airplane, while Scaled was an aircraft company trying to develop a rocket engine. So it’s natural that both companies have their core competency well in hand, but are being held up by the problem that’s not so much in their wheelhouse.

[Update a while later]

The implication, of course, is that if they’d teamed up, there might have been a suborbital vehicle flying years ago. That they didn’t certainly wasn’t XCOR’s fault.

[Update a few minutes later]

Apparently it was a successful test, and they went supersonic.

This may be the first prediction that Sir Richard has ever made that met schedule.

[Afternoon update]

Clark Lindsey has a roundup of links, including the congratulatory press release from XCOR.

Well, they had a nominal liftoff through first-stage separation. And they just separated the fairing (which has been a problem for OSC recently). Stage two has ignited.

[Update a few minutes later]

Well, it’s in orbit. Looks like everything went by the book. Congratulations to the OSC team.