"Coming soon," read a mysterious sign in the portable PC section of Sony's CES booth last night. Sony showed 3-D technology to journalists, too, but that "wasn't an announcement" either? Is there more to come from Sir Howard?

In demos and displays for journalists last night, Sony officials gave stronger hints about what CEO Sir Howard Stringer might say about his company's portable PC, OLED TV, and 3-D activities in a CES keynote later today.

In a press conference earlier in the evening, officials suggested that Stringer might do some talking today on all these points. Journalists were also invited to stay around after the press conference for a 3-D demo. Other products announced at the press conference were also on view, including the new P series netbook.

But just across the hallway in Sony's booth, in another row of portable PCs, there was one blank spot, with a sign that read, "Coming soon."

"I can hardly wait until we can take it [the sign] down," a Sony rep told Betanews.

Meanwhile, a lot of the journalists obliged Sony by donning 3-D glasses and watching movies of prototype 3-D games.

"This is just a technology demo," said Ryan Flanagan, a retail execution specialist at Sony. "We're not making any announcements here," he kept repeating.

When pressed for details, Flanagan told Betanews that Sony's been looking into a lot of possible approaches to 3-D. But, he added, Sony plans to differentiate any future 3-D offerings by "taking care of the whole thing -- A to Z -- for the consumer."

Unlike any of its competitors, Flanagan contended, Sony can handle everything from the video and editing aspects of 3-D to the consumer hardware.