Yes, finally I will be able to use the latest flash player again in Opera on linux.
For me personally, the highlights in this release are:

• Support for latest flashplayer
• Even faster
• Revamped mail backend. Might wanna reevaluate the newsfeed fetching performance. (It had become unacceptable with 50+ feeds)
• Builtin bookmark syncing
• HTML 5 support
• Dragonfly: web dev tools

Read the full changelog here.