It looks like that there is yet another generation of Staccato mounting plates by Dawson. I don't see replacing my current plate anytime soon as the E6000 is doing the job, but this new design incorporates the third bolt, which looks like a major improvement. Dawson is calling it the DPO-ECO (Extreme Co-witness Optic).. I like that they eliminated the lightening cut as well. Looks like a significant improvement.