Under features there's some more info on what's going to be included.
http://www.opera.com/b2b/solutions/mobile/features/
Plus there's a nice PDF document as well, which tells the samething. There's also a few screenshots up in the pdf document and on the site as well.
But here's the list of upcoming things:
Opera Mobile Features
Improved text-wrap
Automatically align web pages with the screen edge
Opera Zoom(TM)
Load and quickly scan full pages and zoom in on only what’s important
Standard zoom
Get the option of two view modes, up close for reading and far and wide for page scanning
Grab and Scroll navigation
Use finger-touch or stylus for easy navigation
Mouse cursor
Just like the desktop, use a mouse cursor to find and click your way around websites with ease
Tabbed browsing
Multitask and browse over multiple websites at once
Address auto-complete
Type less and browser more
Password manager
Make secure logins a single click
Flash ready
Be entertained! Get rich Web content like YouTube right on your phone
Pop-up handler
Keep pop-ups at bay
Landscape mode
View your content widescreen if you prefer
Small screen rendering
Optimize the full Web for your small screen
Keyboard shortcuts
Be more productive with simple keyboard shortcuts
History and bookmarks
Pick-up past browsing sessions and bookmark for next time
Share images
Save images found on the Web and instantly send them to friends by MMS or E-mail
HTTP Upload
Upload to websites such as online mail services or blogs
Save Web pages
Save pages for later offline reading
Hardware accelerated browsing
Experience smooth transitions and loads
New UI for Windows Mobile
Completely overhauled and improved UI for Windows Mobile
Opera Widgets
Get straight to the content and services you need with fewer clicks
AJAX-friendly
Use Web 2.0 sites such as Facebook
RSS
Subscribe to newsfeeds and receive on-the-fly updates
The nice thing is that it's going to support 3rd party plugins
