My 2 cents.
If you can afford iPad or iPad Mini, why not go for it… You won’t regret. Compared to phones and tablets, if you choose tablets, I think for music production iPad will be more useful for its stability and low latency.
I was in your situation. I guessed even if they launch android version, it will definitely contains bugs and latency issues, because its Android after all.
But if you don’t afford it, I suggest you wait and see. And if its not urgent.