When is ios 7 expected to be released to the public?

The resson i want to know this is because i have an iphone 4s and i an currently running on ios 6.1.3… I was running on ios 6.1.2 but my iphone got stuck in a boot loop and i had no choice but to upgrade… I want to be jailbroken again

You can downgrade your current is to 5xx 6xx, just follow guides in the net…
ios 7 will not be available officially at next 2 or 3 months… (beta version will be released soon)