Check this out

[PredatorTheSkullCollector]

This is a part of Aeon's description on myspace.You'd probably ask "Why did you post this here?"Well,I think there's something wrong with this sentence.
"In Januari bassplayer Victor leaves Aeon and is being replaced by Marcus Edvardsson."
1. it's used "leaves" instead left.why?
2. it's used "is being replaced" istead has been replaced by.why?

[Beeesneees]

Hello Predator,

There is something wrong with that sentence - it is the spelling of the month 'January'. Everything else is fine. The sentence is written in the future tense, which explains both of your points.
The description must have been written before January when Victor was still a band member.
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Cheers m' dears!

[PredatorTheSkullCollector]

Oh...Thanks for opening my eyes once again,Bee.I should have read it more carefully...