I preordered a 2.3 AWD Reserve MKC on 3/31/14, with an order number established that same day. Since then have received the same "status" as you...it's in the system, awaiting a week to be scheduled for production. Last week my Sales person checked his dealer inventory vehicles on order and found three 2.0 FWDs are to be built today (5/13), a 2.0 AWD next week or so, and no 2.3 AWDs scheduled yet. He said customer orders will be phased in once all start-up quality has been 100%...running production three weeks without any issues. Production supposedly started 4/21/14.
Concierge calls every two weeks as promised, but really doesn't seem to have anything to report until the unit is scheduled for production. I'm told new scheduling happens on Thursdays, so a good time to have your dealer check the order status is probably Fridays. I plan to check mine this Friday.
Hope this helps. I would guess the incentives will extend as most car incentives do...until sales exceeds some magic number...whatever that is for the MKC.
What model (2.0 FWD or AWD, or 2.3 AWD) did you order? And when?
Tom