Jungle Emperor Leo - first movie
1966. The first "Jungle Emperor Leo" movie (the second one was released in 1997) was shown in Japan and Italy. In Japan it was distributed by Toho, and the first showing was on Sunday, July 31. In Italy it won a Golden Lion (1st prize) at the 19th Film Festival for youth held in Venice. 
Production credits
1967. In Venezuela the movie "Jungle Emperor Leo" won a Silver Lion at the Venezuela International Film Festival.
1975. The "Jungle Emperor Leo" movie was aired in Italy on "Telemontecarlo" on October 11, 1975 at 8:45 PM.
1989. The "Jungle Emperor Leo" movie was aired for the last time in Italy on "Junior TV" as a part of the "Film weekend". (Many thanks to Francesco Piccardo for this info!)
2006. The "Jungle Emperor" movie has been aired on Cartoon Network Japan as a part of the "Cartoon Network Theater" on February 18 and on May 6 (at 12:00 PM and at 7:00 PM).
2008. Good news for Kimba (and Tezuka) fans in the UK: both "Jungle Emperor" movies, along with the first episode from the 1965 series, were screened during the "Osamu Tezuka: Movies into Manga" festival (September 18-24) held in the London's Barbican Centre. The first episode from the original Jungle Emperor series was screened on September 19 from 5:45 PM as part of the "Tezuka on the Telly 1" programme, the 1997 movie was screened on September 20 at 11:00 AM, and on September 23 at 10:30 AM GMT ("Schools' screening"), and the 1966 movie was screened on September 21 at 12:00 AM GMT. All the screenings were in the Centre's Cinema 1. The 1997 movie was dubbed in English, while the 1966 movie were subtitled in English - for the very first time, which made this screening very special.