This is directly from the DIN.
Additionally, all members of Public Service Pension Schemes within 10 years of their Normal Pension Age on 1 Apr 12 will see no change to the amount of pension they will receive or the time at which it can be drawn. This means that:
• Members of AFPS 75 and AFPS 05 who are aged 45 or over on 1 Apr 12 will be able to remain on their current pension schemes and their benefits will be unaffected; and
ll Service personnel who are aged under 45 on 1 Apr 12 will be automatically enrolled into new AFPS when the new scheme starts. Thereafter, any further pension rights they earn will be in the new scheme.
Hope that helps.