Dalto released an updated version of GP Paint. Changes:

New image format support BMPNew image format support RAWNew UINew Tool-EraserNew Tool-Color SamplerNew IconNew Splash ScreenAdded a color switcherThe cursor is now bounded by the screen rather than wrappinggpPaint now uses a 16-bit palette so you palette will not randomly change whenyou load imagesAdded the ability to build a palette based on the current image