Sony has rolled out a teaser ahead of its presentation at IFA 2019. The teaser features the tagline "in the palm of your hand" pointing to a more compact handset in line with rumors and leaks associated with what is thought to be the Sony Xperia 2.
https://www.notebookcheck.net/Sony-Xperia-2-teaser-points-to-compact-version-of-Xperia-1-with-21-9-display-aspect-ratio.434124.0.html