Just received this from DL.

Subject: Higher Status Is Closer Than You Think

GO FOR THE GOLD (OR PLATINUM).
Step up to a higher Medallion status this summer.
As thanks for your loyalty, we want to give you a chance to experience an upgraded level of 2014 Medallion® status. Higher status comes with perks like higher priority for Medallion Complimentary Upgrades, complimentary domestic Economy Comfort™ seating at the time of booking, Priority Boarding, and more.

The best part is that you're really, really close. Register now and, by July 10th, just fly:
Three round-trip Delta or Delta Connection® flights to be automatically upgraded to Gold Medallion status
Four round-trip Delta or Delta Connection flights to be automatically upgraded to Platinum Medallion status
Don't miss out on this exciting chance to step up your status.

I find it bizarre that they sent me this offer as I qualified for 2014-15 PM with their biz elite NYC offer 2 months ago.

T&C below.
Terms & Conditions
Eligibility: Only members who receive this communication directly from Delta Air Lines are eligible to participate in this offer. This offer is non-transferable. To be eligible for the status upgrade, a Member must (i) register online by July 10, 2014, (ii) book and complete travel on required number of round trip flight(s) after registration and before the promotion end date of July 10, 2014, and (iii) not have received a status match or complimentary Medallion® status in the past, and not currently be a Diamond, Platinum, or Gold Medallion member.

Offer: Eligible members must first enroll in the promotion by July 10, 2014 in order to participate. Flights booked prior to enrollment will not be eligible for this promotion. Flights must be booked and completed within the promotional period, which is through July 10, 2014. Enrolled members who purchase and complete three (3) round-trip flights during the promotional period will earn Gold Medallion status for the 2014 Medallion year. Enrolled members who purchase and complete four (4) round-trip flights during the promotional period will earn Platinum Medallion status for the 2014 Medallion year. Eligible flights must be round trip. Eligible itineraries may not include segments flown by other airlines. Eligible flights must be marketed and operated by Delta or Delta Connection only. Only those round-trip flights purchased with a published fare that earns full mileage accrual are eligible. Medallion status will start one day after completion of qualifying travel and ends on February 28, 2015. Medallion status must be earned in subsequent years by traveling the required Medallion Qualification Miles (MQMs) or Medallion Qualification Segments (MQSs) and spending the required Medallion Qualification Dollars (MQDs). Medallion benefits may be enjoyed when traveling on Delta or Delta Connection flights by providing your SkyMiles number when making reservations or at check-in. MQMs are calculated based on distance traveled and fare class purchased on qualifying flights and do not include bonus miles.

Validity Period: To participate in this offer, you must register by July 10, 2014. Enrollment ends 11:59:59 PM, U.S. CST, on July 10, 2014.

SkyMiles: All SkyMiles and Medallion terms and conditions apply. To review full terms and conditions of Medallion Benefits, please visit delta.com/medallionterms.

Miscellaneous: Taxes and fees for Award Travel are the responsibility of the passenger and must be paid at the time the ticket is booked. Award Seats are limited and may not be available on all flights or in all markets. Upgrades are subject to limited availability and may not be available on all flights. All SkyMiles program rules apply to SkyMiles program membership, miles, offers, mile accrual, mile redemption, and travel benefits. To review the rules, please visit delta.com/memberguide. This offer is subject to change or withdrawal at any time without prior notice. Offers are void where prohibited by law. Other restrictions may apply.

Promotional Reference Code: Please refer Delta customer service representative to 97021524.