I had my incubator in for repairs and they also retrofit mine with the new system. Gone is the channel suspension. The length has a shockcord with preloaded tension on each side, so it looks like it will definitely hug along the sides more. This length is not adjustable, on mine anyways. I had the line going over ridgeline to pull up the middle before as well, so we'll see if it helps with that.
The head and foot ends adjust as before with cordlocks on each corner. And the separate lines that hook over the hammock ends which are adjustable with the line lock.
Going out this weekend to test it out.
added a couple pics to help try and illustrate