It looks like another Sonic comic veteran is joining the IDW Sonic series. This time, however, it was done more stealthily. Evan Stanley’s website contains her resume. There, the following is listed:
IDW Publishing Illustrator (comic books/graphic novels) 2017-present
Working freelance on IDW’s Sonic the Hedgehog comic book series. My duties include penciling and inking.
So there you have it. We have another piece of the IDW Sonic puzzle.