The newest update has a Leaderboard screen found under the Speedrun screen. This is slightly more informative than the Steam website leaderboards in that it has Map%, Item%, and Death Count.
Also for Speedrunners, when you exit to title it returns to the Speedrun screen, and the timer continues to count.
It also fixes the bug where stats for Hard Difficulty games weren't being uploaded. So, these leaderboards will be empty until people finish the game on Hard.
The default keyboard controls have also been changed to be more international friendly. This will only affect new players.