(Updated with plans) A former chief software technology officer for Apple, Avadis Tevanian, has announced plans to join a private equity firm connected to Palm. Tevanian will become a managing director at Elevation Partners, having most recently served on the Dolby board of directors, and earlier on the board for Tellme Networks. The executive was with Apple for nine years, serving as the senior VP of software engineering between 1997 and 2003 and as the CSTO until he left in 2006.