Sony Mobile has updated the Sketch Beta application to version 6.1.C.6.0 (from 6.1.A.5.0). The big new addition is a smudge tool which has been introduced due to popular demand. Other additions include thinner brushes and an improved photo import. Head over to the Sketch Beta group if you want to download the update or you can hit the link below.
DOWNLOAD APK: Sketch Beta (6.1.C.6.0)