It could still be delayed, but Apple never seems to update right before the holidays. You can also add 2 months from the official release date for a shipping date that is closer to reality. I guess people would buy it, but at comparable sizes they aren't much heavier than the airs. The difference in 13" models is approximately half a pound according to their specs. The 15" might benefit more from that in terms of absolute weight, but I don't know that skylake specifically...
5/18/15 at 9:49am