The SODALITIVM INTERNATIONALE PASTOR ANGELICVS (SIPA) has the news we've all been waiting for and hope everybody can be here for this great event...
The papal kalendarium published by the Prefecture of the Pontifical Household announces that His Holiness the Pope will celebrate a Solemn Mass in the Vatican Basilica this coming October 9, 2008, at 11:30 a.m. in honor of Pope Pius XII, of blessed memory, on the occasion of the 50th anniversary of his passing.
See here: http://www.vatican.va/various/prefettura/it/udienze_it.html.
Missa Papalis pro Pio XII P.M.
3.IX.2008. Iuxta kalendarium a Praefectura Pontificalis Domus pubblicatum, die 9 Octobris adveniente, in Patriarcale Basilica Principis Apostolorum, hora media ante sextam, Sanctissimus in Christo Pater Benedictus XVI P.M., solemnem missam in memoriam eius decessoris Pii PP XII celebrabit pro quinquagesimo illius anniversario (1958-2008).