Megjelent az Opera 8 beta linux alá is. Ez a verzió ugyanazokat az újításokat tartalmazza, mint a Windowsos változat, kivéve a hangvezérlést és a felolvasást. Ezen kívűl az alábbi módosítások kerültek be (csak a linuxos változatba):
- Support for mouse buttons 6 and 7 (side buttons).
- Support for detecting a running KDE environment and reading the KDE plug-in path.
- Added Alt + F11 as an alternative shortcut to toggle the menu bar.
- When running the "opera" script from the extract directory of a tar.gz or tar.bz, Opera will automatically create a personal settings directory so that "-personaldir" is not required. The ECMAScript console will also work in this mode of operation.
- The default font size for forms and compose fields are now the same as for PRE font.
- Proper colors for PRE, CODE, and TT fonts. The fonts were difficult to read in user mode due to gray text on white background.
- Fix to provide correct redrawing when mouse is leaving elements with CSS hover attribute set.
- Accept Bitstream Vera fonts as suitable default fonts.
- Better font size options for smoothly scalable fonts.