I only spent about twenty minutes playing Robo Recall since I got 1.12, but so far I haven't see any of the camera hand-off jitter I got in previous versions.
1.12 is by far the best tracking-related update. I have zero tracking issues now! Even, when i turn arround, the tracking is rock solid. With these heavy issues pre 1.11 i had, i never thought that this could be improved that much. I'm very happy right now and can enjoy all my touch games like never before. Great work, Oculus!