Are mirosoft planning to stop supporting Windows XP ?

Answer 1

Of course they are ... it's only a question of time.

Most PC vendors have already bowed to MS pressure and are offering only VISTA for their home PC.... lucky DELL saw the light and have gone back to offering buyers a choice ..

Why ?

Because VISTA 'anti-piracy' is better and MS would like to divert resources from fixing critical security bugs in XP and focus on fixing critical security bugs in VISTA instead.