I installed Opera Browser (Version 12.16) on my Ubuntu 12.04, but I couldn't find the Turbo Mode in it.
So I am planning to install Opera 24 Developer version.
Can Opera 24 Developer be installed on Ubuntu 12.04?
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From the official site you can see the difference between stable version for Linux and other OS.
Latest stable version for Linux is 12.16:
Latest stable version for Mac is 24.0:
Thankfully, Opera has bring newer version into Linux in the Developer branch. You can get the latest version for Linux from the Opera Developer page.