U6 series with a 13.3" display

I have been expecting Asus to come up with a new 13.3" laptop series with the same design with U6
to be honest, the U6 series has a really wide body and it can totally fit a 13.3" display, just like the VAIO SZ, and speaking of which, the U6 design seems to resemble the SZ series as well.
why doesn't ASUS just get rid of the W7 laptops which get so many complaints about the high temperature and limited upgradeability of RAM, and just start with a whole new 13.3" series besides the F6 series since the F6's are made way too big for what a 13.3" laptop should be.
F6 series can be the lower price models and the new 13.3" series with the U6 design can be the higher grade.
the design of U6 is really delicate and elegant.
the biggest problems would have to be the battery life as well as the lack of space for a 6 cell battery - the battery sticks out so much that it totally kills the mobility and the beauty of its design.
with a 3cell battery however it could only last less than an hour under the high speed performance.
bringing an extra battery and a power adapter is simply way too inconvenient.
I hope that ASUS will solve these issues if they DO start the new 13.3" series that I desire...

 

The U3 was the 13.3" U series, if I remember correctly. But ASUS are not updating it.. they replaced it with the F model that you mentioned.