What is the largest partition size for bootcamp?

Heya,

Quite a while ago, i had a bootcamp partition (about 5 years ago). Back then there was a maximum limit to the size of the partition (i think it was around 32GB). Does this limit still apply? or has Apple made it unlimited? (i.e. could 50% of my hardrive run Windows in bootcamp? I'm waiting for the new Windows 10 before doing this. Does anyone know if there are any new considerations for the new windows?

Thanks!