The new big thing is the endless mode, you can now play for as long as you like.
See below for rest of the changes.

• Added an endless mode for infinite play
  
• BUGFIX: Retry should reuse the selected base mod (add it again)
  
• BALANCE: Less enemies per wave
  
• BALANCE: Update of enemy hp scaling
  
• BALANCE: Less projectiles and speed for end enemies
  

Trying to keep updates short and to the point for the time being.