A look at the management changes John Ternus could make as many key Apple execs prepare to leave in the next few years; Apple tested a Pencil for folding iPhone (Mark Gurman/Bloomberg)

Mark Gurman / Bloomberg: A look at the management changes John Ternus could make as many key Apple execs prepare to leave in the next few years; Apple tested a Pencil for folding iPhone  —  Also: Apple experimented with a Pencil for the coming foldable iPhone.  —  When John Ternus becomes Apple's CEO this week …