That's a wrap: Jon Rubinstein leaves HP, Palm, webOS

According to a number of reports on Friday, the head of HP's mobile efforts, Jon Rubinstein, has left the company.

Hewlett-Packard acquired Palm in 2010 as a move to advance in the smartphone business. But after a little more than one year and a just a few new mobile devices, HP killed the Palm brand, dissolved its mobile business unit, and turned webOS into an open source project.

So after four years championing webOS as the savior of Palm, then as the key to the mobile kingdom for HP, Rubinstein is returning to the sidelines.

He has announced no plans for the immediate future.