(a) The implementation and operation of the amendments to subparagraph (B) of paragraph (1) of subdivision (a) of Section 366, subdivision (g) of Section 366.1, subdivisions (c) and (g) of Section 366.21, subdivision (a) of Section 366.22, subdivision (a) of Section 366.25, paragraph (3) of, and subparagraph (A) of paragraph (4) of, subdivision (c) of Section 366.26, paragraphs (2) and (3) of subdivision (e) of Section 366.3, and subdivision (i) of Section 16501.1 enacted at the 2005–06 Regular Session shall be phased in, consistent with the child’s best interests, as follows:
(1) The first phase of expansion shall apply to a child who is 10 years of age or older and placed with a nonrelative for six months or longer.
(2) The second phase of expansion shall apply to a child who is 10 years of age or older and placed with a nonrelative or in permanent placement relative care for six months or longer.
(3) The final phase of expansion shall apply to a child who is 10 years of age or older and who has been in out-of-home placement for six months or longer.
(b) All phases of subdivision (a) shall be subject to appropriation through the budget process. Those appropriations shall apply only to the state’s share of costs. Counties shall remain responsible for their nonfederal share of costs.