Improved XP collection optimization: XP gems now merge together for better performance.
Added a new XP type: Red XP, which appears when XP value reaches 10.
Increased Laser Rifle range from 30 to 35.
Fixed an issue with upgrade selection: if the player levels up more than once, the upgrade screen now waits until all upgrades are selected before disappearing.
Source: Steam Community (opens in a new tab)