Today there's a new status update and it's not about another delay. Rather, the Lightworks development team has said in this forum thread, "We aim to have a Linux alpha build available on October 30th." Assuming they're still talking this year, we're only one month and a half away from seeing the much-anticipated Lightworks Linux Alpha.
On another positive note, also said in that thread was that the Lightworks experience on (Ubuntu) Linux should basically be the same as their primary Windows version. "Lightworks on Ubuntu is virtually indistinguishable from the Windows version. There are some subtle differences in the fonts, but the core experience is deliberately the same. We want the editing experience to be identical, regardless of what the operating system is."
Let's hope that Lightworks for Linux does indeed see a public alpha in October.