Lets say that the price per share will be 70 before the Q4 release. After the split the price per share would be around 47.
After the stock split the share price will go down - but you will have more shares. Your value will stay the same. However, imagine after the split they release amazing Q4 results. The average retail investor might then take a look at the stock and see that the price is a measly 47 dollars and think it would be a steal owning a part of the next industrial revolution. The share price would rise.
I don't think management would offer a split if they werent confident in the Q4 results.