Lenovo ThinkPad X230 to the ThinkPad X240 Problems

As I have written previously, I am a ThinkPad user. I currently have the ThinkPad x230 and I eagerly await my ThinkPad X240.

However, I am concerned as I constantly go to the Lenovo.COM website and go to customize the ThinkPad X240 and find many of the customization's to change from time to time. Moreover, I am also questioning the ship date. It states on the website, estimated ship date 2015/01/01 and estimated delivery date 2015/01/08.

Ship date states 2015/01/01

I have tried to call them but they are very busy. Hopefully, I will find out soon. But in any event, I have customized my ThinkPad X240 with 8GB PC3-12800 DDR3L (1 DIMM), now on the website, it is only allowing you to configure 4 GB total memory. Not realy sure what the problem is?

Only Memory Size coming up in customization is 4 GB, But I ordered 8GB

For Example: the configuration I have ordered is as follows
ThinkPad X240 20AL

Total memory 8GB PC3-12800 DDR3L (1 DIMM)
Hard drive 500GB HDD 7200rpm
Battery 3cell LiPolymer 23.2Wh Front
WiFi wireless LAN adapters Intel 7260 BT ACBGN
Wireless WAN accessories MBL BB upgradable, future use
AC Adapter and Power Cord 45W AC Adpt2 US (2pin)
Assistant Voice Recognition Nuance Assistant,US English
Battery 2 6cell LiIon 72Wh Cyl HC Rear
Camera 720p HD Camera for X
Display Panel X240 12.5HD IPS MT WWAN
Keyboard Language KYB (Backlit) US English
Pointing device X240 FPR
Preload Language W8 P64 English
Preload OS Windows 8 Pro 64
Processor Intel Core i7-4600U on MB
Security Chip 2 Security Chip Enabled
Storage Adapter 16GB M.2_SSD Single
System Unit X240 Intel i7-4600U
System expansion slots 3rd M.2 SSD slot