Looks like it’s getting more concrete…
https://www.storagenewsletter.com/rubriques/tapes/ibm-first-to-reveal-lto-7-product/
“IBM was the first company to launch an LTO-6 drive available November 9, 2012.
Three years later, it’s also the first one to reveal an LTO-7 device supposed to reach the market on November 20, 2015, as Big Blue continues one of the strongest promoter of tape technology in the industry since decades.”