When windows phone 7.8 update is coming ?

Hi,
I have a interest in buying new windows mobile phones, and there is no information update currently on the windows phone 7.8. I was just figuring it out that from where i should get latest update from it. If someone here with useful information please let me know.

Hi shanu,
Microsoft finally come forth stating that Windows Phone 7.8 is here to stay for a long while. So, don't you worry as soon as the latest updates releases regarding windows phone 7.8 you will be informed.