This would be a real breakthrough if they could send more signals point to point along the same line, but they can't. They are effectively splattering the signal across a wider area and using some phase jiggery-pokery to send different bits of the signal to different places. They're using a new spatial encoding trick but it doesn't change the basic physics.
More complex spatial antennas could always send more stuff, the trouble is they're spatial so don't expect one built into in your mobile phone. To get the sort of bandwidth that you can get from a strand or two of fibre out the chunk of spectrum a telco might hold, you'll need an antenna the size of a city and a massive amount of cables and electronics to drive it. Which is kinda what's happening, when you think about it.