Ah, yeah that's what you mean - so the first time I built this graph I used the real dates and their difference from release to give accurate %s. This turned out to not work, because there wasn't enough space to fit the text underneath. I then explored making the graph vertical with accurate %s, but it still felt heavily one-sided at end with the beta/rc/release. all clumped at the bottom.

The third iteration is this, I moved the release date up into a sentence above, then had a mostly representational but kinda accurate overview of the three release stages. I think it gets the idea of the phases across, works in all browser sizes etc and doesn't take up too much visual space