I agree with the comment about the base engine. Impressive power in a car of this class... The current Forte5 starts at $16,895, and if the new one doesn't go up too much, it will be a performance bargain... Unfortunately it sounds like it's automatic only.
Surely the turbocharged SX will be great, and according to reviews of the Veloster Turbo, power is plenty. All Kia models have been tuned to be more sporty than the equivalent Hyundai models, so it's safe to assume the new Forte5 EX will be sportier than the Elantra GT, and the SX even more so.
Styling is nice, but I do miss some of the features of the current Forte5... That said, it's probably the only good looking 5-door other than the Elantra GT. The front-end even looks a bit like my 08' Tiburon - I like.
The EX seems like a great car, but I won't get an automatic... Does the sedan come with a manual with the same engine? The SX is an interesting alternative to the Veloster Turbo, but it might be a bit more pricey. Still, the SX manual will be a very exciting model in the Kia showroom.