It seems DeWALT has dedicated DCS350-DCS359 model numbers to Oscillating Multi Tools. First they started with DCS355 exactly from the middle of this range, after a few years almost at the same time one number below (DCS354 Atomic) and one number above (DCS356 three speed option) was released and now DSC533 12V version is released. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.