I've noticed the following bug since getting the iPhone 6s and iOS 9. It doesn't happen on my wife's 5c though, so could someone else with a 6s out at least a 6 let me know if this happens to them as well so I know if it is my phone or Swype?
When long pressing the "Q" key to get a "1", you have to wait before the "Q" and appears and then wait even longer before the "1" shows up. Thus is unlike all other top row letters where the letter shows up immediately and then changes to the number. This bug seems to have appeared with the introduction of iOS 9.
Iphone 6s, iOS9.0.2, Swype 1.6