Opera is, yet again, switching tracks mid-way and has now announced that the next major release is going to be Opera 12.10, which is coming soon, and not Opera 12.50 that is still in the pipeline but needs more work.
Just like when Opera decided to roll out the unscheduled Opera 11.60 ahead of Opera 12 to get the features that were complete in front of users, Opera 12.10 will consist of whatever features are ready for use at this point.
It makes sense not to arbitrarily hold back on features just because other components aren't done yet, getting stuff in front of users as soon as it's ready is a smart move.
"This build takes all the work done thus far and adds a nice new feature for Mac users, plus loads of bug fixes and a big Core upgrade," Opera explained.
The browser maker has already issued the first snapshot release, a pre-beta, of the upcoming Opera 12.10. The first beta should be landing within days, next week at most.
Opera 12.10 comes with a long list of improvements and enhancements, but the big new features are upgraded guts, i.e. a new version of the rendering engine Presto to 2.12.388.
The latest Presto comes with a long, long list of fixes and small improvements, you can check out Opera's announcement for it in full.
One area of focus has been WebM and WebP. Opera 12.10 comes with the latest "Eider" release of the libvpx library, which handles WebM video. This version was released in May, but Opera only now incorporates it.
Opera 12.10 also comes with the brand new libwebp 0.2, which is a lot fresher and brings a lot of improvements to the WebP image format, like lossy transparency, and lossless compression support.
Mac users, well, those lucky enough to be sporting a MacBook Pro with the new Retina display, should be looking forward to Opera 12.10 as it adds support for said displays. Opera's implementation is similar to Apple's.
CSS code will be interpreted as "points" instead of pixels, i.e. one pixel in CSS will mean four actual pixels on the screen. Images will get resampled to make them bigger, so they'll look blurry if they're not big enough for Retina displays.