I heard Delta has some really basic fares with no frills – what’s that about?

I think you’re referring to some changes that were announced this week to Delta’s existing Basic Economy fares. First introduced in 2012 in a small number of markets where Delta competes head-to-head with an ultra low-cost carrier, Basic Economy fares are non-refundable, non-changeable, can only be combined with other Basic Economy fares, and do not allow advance seat assignments, even for elite/Medallion members. Currently, passengers on these fares still receive 100% base miles and elite members still earn their Medallion bonuses. These fares are eligible for complimentary upgrades and can be used with Same Day Standby and Same Day Confirm status. However, on February 1, 2015 some things will change. Basic Economy fares will no longer be eligible for complimentary or paid upgrades; paid, complimentary, or discounted Economy Comfort; paid or complimentary Preferred Seats; paid Priority Boarding; or same-day confirmed or same-day standby travel changes.