Sega posted a notice today a the Virtua Fighter 5 R official site confirming that a new version of the game has hit arcades.
VF5 R Revision 1, as the update is called is just a bug fix version of the fighter. It does not make any changes to moves or balance.
The official site makes note of two fixes. Players can now make use of the tournament view option in the VF Terminal. This had been temporarily disabled. In addition, a bug involving one of Jean's items has been fixed.
You'll know you're playing the new version if the title screen and matching screen are marked as "REVISION 1."