Keep in mind that every new release has it's own issues. Some are more widespread than others and some are HW related while some are SW related.
But to not to make you all terrified, they usually drop within the average failure rate of consumer productsBy following MR, you will see a lot horror stories but they are mostly individual stories, most customers are more than satisfied with their purchase
I will admit that this is a concern of mine!
...that the next refresh will have its own sort of problems to be worked out over the subsequent months... yikes!
I'm hoping for a more refined version of the current one out with minor spec changes, which in all honesty, dont really care too much about (the current i7 specs are fine for me). My main concern is really really the screen. I'm an obsessive individual and such blemishes will be magnified by my critical perception.