A DL press release from 4/3/19 references Ku wifi. Did they really skip the opportunity to add 2Ku on these refurbs? Emphasis mine.
- State-of-the-art interior with full-spectrum LED ambient lighting, Gogo Ku Wi-Fi connectivity, free mobile messaging and power ports available at every seat.
https://news.delta.com/delta-launche...stralia-and-us