I was just checking to see if any new promos were available on delta.com and look what they had a link to:
https://online.americanexpress.com/dapply/partner/preacq/dal/dal-2240/carddetails
I opened the link in an incognito window, and it came up, so in theory anyone who has had another personal Delta card for at least a year should be eligible for the upgrade offer. Unfortunately, the fine print clearly states that anyone who currently has or has had the card is ineligible, so no bonus 35k SkyMiles for upgrading my Platinum SkyMiles to a 2nd Reserve.
While the new account offers have been dramatically better lately (plus this lacks any MQMs), it's still not a bad option at all for someone who otherwise does not want to open a new account since worst case the bonus more than covers the entire first year AF, and of course it's very easy to cover it with the companion First Class ticket each subsequent year. Has anyone ever seen a better upgrade offer for Delta Reserve? When I was considering my upgrade last year, I could only really find 10k and 15k offers, but then the 70k new card bonus appeared and I jumped on that instead.
@Anonymous absolutely you can have multiple cards. I got the Platinum in October 2017, Reserve in October 2018, and Platinum Business in November 2018.