"Phil is only going to design about 10 golf courses"

In the release covering Phil Mickelson's surprising move into course design (surprising because just a year or so ago he was downplaying his interest in this area for the time being), there is the usual stuff about projects and who he'll be working with (different people on different projects).

But reader Jordan caught this quote from his agent, which I thought was odd.

"Phil is only going to design about 10 golf courses, and RiverRock will be his mountain course," said Tim Ummel, Mickelson's agent.

Only 10? This year or ever?