Yes, SK uses a combination of Stonehenge, a sun dial and Mayan Calendar to determine when they might release a new tool.
It's truly an exercise in patience and maybe loyalty to see if anything new gets released. The 1/4 inch drive 90 tooth ratchets came out in December 2018 so, in SK time, they're newly released.
Off the top of my head, i only remember some deep impact sockets and mini pliers coming out in 2019.
I would like to see a lot more new products like flex head and long fixed 90 tooth ratchets, different versions of the X Frame wrenches, I'd like SK to take the anti slip open end off of the X Frame and stick it on their long combination wrenches. Perhaps the Ideal owned SK isn't doing well and can't afford to develop and release new products