Home Screen after building new B2G is as below. 
I tried reflashing with the builds available in Dropbox but there was no use. Even stable gives me the same Home screen. 
The same solution as the one we used for the screen reader issue worked for me.
I used.
- adb shell
- wipe data
- reboot
The stable builds on dropbox have this broken homescreen issue, apparently this is solvable just by rebooting the tablet but I built and flashed gaia on mine to resolve it.
I dont think it worked in my case by just rebooting. In fact flashing with various builds was of no use.
Ahh should have done that 