Ive just downloaded: punbb-1.2-dev.zip and it wont install, but i dont care about that, this is what i'm worrying about:
If I upgrade 1.1.5 -> 1.2 would i loose all my modifications, styles ect.?
It dont matter if 1.2 contains bugs etc. because my site is also in early development and if I find something I can nearly always resolve it 
so would it be wise to upgrade 1.1 into 1.2 (ive got a backup of 1.1)
so really i'm asking is there any point in upgrading because I dont want to waste time by upgrading then having to restore a backup