Is there any upcoming project that would act like a bitcoin savings account?
There is already a project for that if you are comfortable to the interest they are paying and that is freebitco.in. Its a site that have been on the space for quite an amount of time through their faucet platform and other ways such as gambling and lottery platforms. So, you are good to trust them with your money and get your interest even though might be small.
What happens when freebitco.in gets hacked and all the bitcoin is stolen?
I don't think there is anything such as a bitcoin savings account. What you are asking is for a bitcoin bank which does not exist as of now. And it doesn't make much of a sense to have a bitcoin bank as that would lead to centralization and bitcoin aims to decentralize money.
This is rubbish. Interest exists because people need capital to start enterprises, so they borrow money, and have to pay back interest on it, a portion of which goes to the lender (you). So it does make sense, even in a decentralized currency.
Isn't %4.08 annually very much stupid and low? fuck mate if I were to give my money to a bank locally I'd received %18 annually, this is just lame.
There is no guarantee whatsoever to secure our coins correct?
18% in your currency is not going to amount to much because of inflation. Return on a currency = interest PLUS inflation.