WSN 10.0 is now available. The initial new feature is an adblock detection and nag tool, which allows you to show a message to people who are blocking your ads asking them to please whitelist your site. This should increase your advertising revenue, if your ads are inoffensive enough that people are willing to leave them whitelisted. Go to Admin Panel -> Revenue -> AdBlock Prevention to activate this tool (it requires that your ads be set up through WSN's advertising slots system).

The current development goal is to just do incremental changes -- no more big releases that contain dozens of new features saved up at once, because I found those led to more bugs that took longer to discover compared to just introducing the features one at a time in minor releases. Thus 10.0 isn't a major change from 9.2 yet, though it will become one over the coming months.

The 10.0 series is where new stuff will be added from now on, making 9.2 the stable series which will only get fixes. Basically the purpose of 10.0 is to stabilize 9.2 so that those who don't want to deal with a lot of changes and
possible bugs can upgrade from 9.1 and enjoy the 9.2 features. 9.1 becomes a legacy series which will only get security fixes, but the 9.1 -> 9.2 upgrade is easy and risk-free.

Whether you want 9.2 or 10.0 for your site just depends whether you value updates or stability more for the site, or whether you spot a particular feature added to 10 that you want at some point.