Hi.
The facts about how many iPhone 5 units apple have sold speak for themselves and I really don't see Apple releasing another iPhone until the usual year is up, unless they go against their business strategy which I doubt, but stranger things have happened I guess.
The inclusion of Lte/4g is not the only improvement apple have given to the 5 over the 4s. Just looking at its specs highlight these.
Their is always going to be an apple to android thing and that's good to keep the market fresh !
I see you don't own and use the iPhone 5 and are relying on your friends opinions. That's ok but not comprehensive in how you would truly feel if you were using one yourself.
I also visit forums for android users and I would encourage you to also in order to see that the grass is not always greener on the other side !
I've been in cellphone shops where the employee has tried to turn a customer away from certain mobiles to choose another , which is most likely because that one is on some kind of promotion or the employee gets paid a bigger bonus for selling that model or the manager needs a bigger push on selling a certain make and model so it's not always down to market trend !
I hope you find a phone your going to be happy with.