His last two starts certainly paint the picture of him "figuring it out." He's been dominant the last two times out. 15 IP, 2.4 ERA, 7.8 k/9, 1.8 bb/9, 4.33 k/bb
I posted some graphs in his game thread from his last start in May pointing out how well he was using the change up. He's getting similar vertical and horizontal movement between his two fastballs and the change, with similar spin, but a significant difference in velocity.
It's been really hard for hitters to distinguish between it and his heat which makes it a very effective weapon. So long as he can keep throwing it like that, he'll continue to baffle hitters, strike out a bunch of them and go deep into games. So it's now just a matter of consistency, which he has a long way to go to prove he's found.
I'm hoping he's turning the corner. I picked him up for my fantasy team after his last start because I think he might be. The pitchfx data show a completely different pitcher in the last two games than he was in the previous 9. If it's not a flash in the pan, the rotation is going to be a strength going forward, even if Lester keeps middling about like a back of the rotation kind of guy. At least until Doubront wears down and needs to be moved to the pen or shut down for the year.