There is no delay on the upgrades they are shipping Monday. Everybody at the same time. That's been deemed the fairest option for all, except Marcus who had suddenly discovered the oversell and freaked out as he had to ensure enough components were available.
These sound like 2 separate events, one following the other: originally KNC deemed the fairest option for all to send all upgrades on Monday and then Marcus suddenly discovered the oversell and freaked out as he had to ensure enough components were available. And because time travel hasn't really been invented yet it looks like the decision to ship everything on Monday was made before Marcus sudden discovery, therefore before the sale even began.
Do I understand correct?