INDY 4 NEWS:

At age 64, Ford says he's still fit to play Indy
Oct. 24, 2006. 01:00 AM (AP)

ROME-Harrison Ford says he feels "fit to continue" to play Indiana Jones, despite growing older.

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Not much in the way of detail in that article, but someone named Mark Harrison publishes some rumors in the Alabama Times-Journal::

Ford has said the fourth movie will be set in slightly more recent times, to reflect a proper degree of aging for the characters. It will be interesting to see is how well the concept itself has aged, and whether audiences can still feel quite so detached from the concept of pure evil in a post 9-11 world. Suddenly, the concept of evildoers trying to get their hands on weapons of great power seems a little less like fantasy.

We'll see.

By the way, it's "Ark," not "Arc."