Is it correct?

It's fine.

Unless of course you aren't releasing a book in 2 days.

It's an incomplete sentence.

Do you mean "I am releasing my book in two days?"

I mean my book is ready but only proofreading is left so in that sense, is it ok?

Yes, but is it ok if i dont add "iam"?

Does anyone else find it strange that someone who is releasing their own book is asking about grammar?

Dumb dude, my book isnt in English

I am not a dude. And how the heck would I know it wasn't in English - especially in light of the fact that you want to note it is being released using English words. Logic would then have it - that the book is in English.

Is the book in English? If so, I would imagine you have a proofreader and if so why wouldn't you ask your proofreader?

Not that we are not willing to help - just an odd question to ask for the English term for a non-English book?

Chill, it was just a question if you didnt have answer then idk why did you answer. I did not please you to answer my question if you dont want to give answer to my question then go away i dont have time for you

Hostage to the proofreader.

If your book has not yet been proofread there's no way it will be released in two days. It will be a couple of months at the very least.