According to their official site:

The current line-up of the Sugababes has disbanded.

Heidi Range and Amelle Berrabah will continue as the Sugababes and will be joined by new member Jade Ewen. They release their album ‘Sweet 7’ on November 23rd through Island Records.

Keisha Buchanan will continue to record for Island Records as a solo artist.

Oh no

WHAT!!??

Keisha was the only original Sugababe

Why?
The last original Sugababe has left.... my favorite one too.........

bumps get sexy

Keisha can't leave she has the best vocal's of the group!

I seriously hope they disband for good, they stopped making anything decent when Mutya left anyways.

What's the point anymore ?

Why Keisha?! She was the best member of the group!

R.I.P.

WHAAAAAAAAAAAAAAAAAAAAAT?!?!?!?!?!?!?!??!
I can't believe,she was my favorite!!! (((((((((

Here is what she wrote on her twitter page:

Dear Friends I'm sad to say that I am no longer apart of the Sugababes. I've had a great time and have achieved more then I ever thought I would. Although it was not my choice to leave, it's time to enter a new chapter in my life. I have nothing but positive things to say about the girls and I wish them the best of luck. I would like to state that there were no arguments, bullying or anything of the sort that lead to this. Sometimes a break down in communication and lack of trust can result in many different things. I would also like to point out that I have always supported the girls and they have also supported me. Remember my drunk pictures out with Amelle, supporting her on her success with Tinchy Stryder... Oh the shame... But what a fun night we had. Now I'm going to take some time to focus on me. I've been in this band for 11 years and I have achieved so much. I have a great family and friends who are behind me 100% and at the age of 24, I'm now going out into this world on my own...Although im nervous... I'm still very excited on what lies ahead. :-) I want to thank the Sugababes fans and my fans for all your support and all who have never judged me, but excepted me for who I am...The feisty, funny, professional, fearless, motor mouth... lol. This is not the end... but the beginning!!!! Thank you always... Keisha xxx

The Sugababes are not the Sugababes anymore they totatly become a new band.

exactly!

This will be the last Sugababes album for me, any more they make I will probably just not listen too.

So they forced her to leave or what?
Was she in a fight with Heidi?

I'll probably continue to listen to them, but it just won't be the same.
I'd prefer if Amelle left instead of Keisha.
They might actually work with the new line-up, cause Jade has a powerful voice too, like Keisha.
But they just won't be the same.......

They need to finish this era off and split. Do one last song and release a greatest hits. There early legacy is great there latter stuff a bit meh. IMO.

Why?

Amelle will take the lead now, and Heidi and Jade will be the irrelevant members with small parts in every song.

There not really a point. It look weird when they sing old songs as it not really there songs. Heidi was there 99% of the career of the Sugababes so she only makes sence. Now its a total new band no original member. There not the Sugababes. To me Sugababes 1998-2009