Based on some of the reviews and FW's own comments, the keyboard flex is certainly not universal as FW didn't even seem to know about the issue prior,, and iirc

Based on some of the reviews and FW's own comments, the keyboard flex is certainly not universal as FW didn't even seem to know about the issue prior,, and iirc same for the screen issue. Even if these problems are still present for mass production (which i find unlikely but it is possible), by the time you or i (batch 7) get ours, it should be fixed. Also, based on some of nrp's comments elsewhere in this thread (and a pinch of guesswork), it looks like batches 11+ are looking at sometime between April and June.