This patch adds 4 new enemies with new systems to the game.
One of the new systems is Spray:
If you want to fire many more projectiles, and aren't particular about where those projectiles end up, Spray lets you increase both your fire speed and volley speed, which can help you deal damage much much faster.
This patch also adds rerolling to the shop. If you don't like the shop's current offers, you can spend another key to reroll, which will never pick the same systems it just had.
This patch also reduces the damage and fire rate of some enemies, particularly some bosses, and reduces the Titan's health by 10%, to smooth out game progression a bit.
If you bought the game and you're enjoying it, please consider leaving a review, and if you have feedback, please feel free to add it in the Steam Discussions.