It's not known yet. Plus, It's just a rumor.
A fourth Lion King film will not be released in 2010 as Disney did not officially announce that it was in production at all nor given any release date.
No, It's just a rumor over the internet. But.. Who knows
No. There's three: The Lion King, The Lion King 2: Simba's Pride, The Lion King 1½; Hakuna Matata.
Giraffes, water buffalo, small birds, and gazelle.
A lion has four legs.
Which King William? There have been four, you need to specify which one.
The four letter word for a mountain lion is a Puma.
A lion stays in a cage.
'I am number four'
A winged lion is Mark's symbol. The lion derives from Mark's description of John the Baptist as a "voice of one crying out in the desert" (Mark 1:3), which artists compared to a roaring lion. The wings come from the application of Ezekiel's vision of four winged creatures (Ezekiel, chapter one) to the evangelists.
A lion is a mammal, so it will have four heart chambers.
There are four phonemes in the word "lion": /l/, /ai/, /ə/, /n/.