The new 'Lupin III' TV series that was originally announced for Spring in Japan has unfortunately been delayed until the fall – but it's not all bad news however. The 'original' composer, Yuji Ohno, has been enlisted to do the series score! Ohno released a comment on his involvement with the series, stating “"Lupin is returning center stage! This is what 'Lupin Sound' should be! Please look forward to that kind of music." While Ohno didn't score the original 'green jacket' series, he did score the second and third TV series (often affectionately referred to by fans as the 'red jacket' and 'pink jacket' series), as well as all of the yearly TV specials for the franchise.
There has been no word as of yet as to the cast of the franchise, but it is likely that everyone from the recent series and specials will be returning. The only one in question (and keep in mind this is highly, highly speculative) is Jigen's original seiyuu, Kiyoshi Kobayashi. Kobayashi has been playing the character since the 70's, and the recent 'Daisuke Jigen's Gravestone' film seems like the ideal place for him to step down if he so wishes. We at the Fandom Writer certainly hope he's still involved though.