If you go to
this thread, starting at post #298 there are photos and a couple of fairly detailed reviews of the LH Y+ product. If you have time to kill, the whole thread has some decent discussion.
As one of the reviewers, I find the new LH Premium Economy product to be a nice step up over regular economy, and reasonably priced (typically 25%-50% more than similar Y fares) for what is being offered.