From what I have seen on the new Simplex Ultra, it has significantly faster signal processing & power than the current Simplex+. This is in addition to all the extra features and hardware upgrade,
If Nokta choses to introduce it as a SSF machine, the modification of the coil may be the bigger delay.
Who knows. They could introduce the Base model as a Single frequency unit and offer SSF on the midline & Ultra or just the Ultra. It is all just a guess on my part thinking I have a feel for Nokta's marketing savvy. They aren't about to let Minelab out wit them so easily.