What will happen to my apps?

I have the iphone 5 and I know that ios 7 comes out today. I've read here and there that not all apps are supported by it. What happens if I update it and they all aren't supported? Will they still work just be different? I really want to update to ios 7. I've had a couple apps that have been updated to support it. Anyone know anything?

Siri vs svoice which is better?

I have samsung s3 and my friend has iphone 5 so he has siri

and we made a battle between both on which is better

it's how come siri has a personality and answers indirect questions

while svoice doesn't have personality and you must ask direct questions

for example

who is steve jobs

what is an apple?

siri can define the question if it wasn't like this

how to make svoice smarter

but maybe you have a different opinion.

Why is my iphone 4 roaming web 24/7?

This has never happened before. Sense the beginning of the new billing cycle, 3 days ago, it has been "roaming web" nonstop according to my account on the ATT website. In less than three days, it has used nearly 4 gigs of data! It is using data nonstop, even while I sleep. What's going on? I already plan on calling ATT when they open and/or stopping by today. Just want to know if others have had this problem?