Effective December 1, 1997, what is commonly referred to as the "residual exception" to the hearsay rule has a new home. The residual exception, formerly housed at Rule 803(24) (Availability of Declarant Immaterial) and Rule 804(b)(5) (Declarant Unavailable) has been moved to new Rule 807. Rule 807 merely combines former Rules 803(24) and Rule 804(b)(5) into one exception, and no change in meaning was intended. Advisory Committee Notes to Rule 807 (1997).