As Paul Handley describes in The Church times in his article 'Hammered out: a new test of faith?' 4th July 08
The GAFCON leadership has not yet given any indication how the Jerusalem Declaration might be used, beyond describing it as the basis for their fellowship of confessing Anglicans. It might thus be described as the gateway to acceptance by the conservative Anglicans, and the test of faith for provinces, dioceses, and congregations alike... It is conceivable, then, that the Declaration will become a new test of faith.