Yeah, if you have the license for SAI1 the upgrade to SAI2 is free. SAI2 has actually been around since 2014, but this version is in full English, and seems to have ironed out most of the kinks. For all intents and purposes this seems to be an actual working upgrade.
I upgraded to SAI2 because it has 64bit support, but here’s some of the neat stuff in it:
Text tool
Quickline
Perspective grid (your lines snap to the grid)
Ruler (straight/ellipse, your lines snap to the ruler)
I am Silver Tongue, I am an artist. I have many characters and you can check out my art in the art tag. I occasionally practice witchcraft though I don't do anything too complicated. I am girl 2 and don't know what else to put here.