I would suggest you to go over the links I mentioned in this post:
Together with this compatibility matrix:
In short, the new versions give more features and generally more control over your projects (including their stability).
You can also see the release notes to judge if there are any features that would make it worthwhile for you to upgrade (I bet there are! 
):
Anil_G
ashokkarale
jinal.shah
Gautham_Pattabiraman
postwick
chandreshsinh.jadeja
vrdabberu
Ajay_Mishra
sven.wullum1
Vyshnavi_Nalumachu