Today spatstat 1.63-1 ‘Made from recycled electrons’ has been uploaded to CRAN where Windows and OSX binaries are also available. You can also download it from the github repository. The main changes are (full release notes here):

• Enhancement to plot.linim
• Fill missing pixel values by taking the nearest defined pixel value.
• Minor improvements and bug fixes.
• spatstat now requires spatstat.utils version 1.17-0.