(Help needed) A few questions before buy it... topic

Hello XDA

I'm going to buy a Xperia C Dual, but, here is a few questions...

1. Did Sony release the open source for Xperia C?

2. Is the CPU and GPU open source / Drivers released?

3. Can we have a stable CyanogenMod, AOKP, Paranoid Android... ? (Read question 2)

4. If the answer for questions 1, 2 and 3 is yes, why this device still doesn't have any custom ROM?

5. Will the device receive any Android upgrade?

6. Does the screen resolution (540x960) support the Themer app (by MyColorScreen)?

Reply me please :D
I want to buy this device or the Moto G