Adobe has discontinued its experimental 64-bit Flash player for Linux, citing the need for significant architectural changes to the software. The company assures users that the project hasn't been abandoned.
When the 64-bit plugin was initially made available for testing purposes through an Adobe Labs project in 2008, the company promised that it would deliver full 64-bit support for Linux, Windows, and Mac OS X in the next major version of Flash. Two years later, we are still waiting. In its statement about the termination of the current 64-bit Linux plugin, Adobe reaffirmed its commitment to eventually achieve full 64-bit support across all three operating systems.