Just my 2 cents...
is it ready for relase? no.
is it stable enough to be released? yes.
My opinions
It just needs to be a bit polished up to get that look of work in progress out of the menu and i think it should be made very clear that it is not the final version, and that updates are going to be available for no extra price, bla, bla, $marketing_catchphrase_of_choice.
Luca