My theory is it's because Adobe's dev teams test the softwares on (up to) these builds and therefore cannot guarentee compatibility with earlier versions but if someone from Adobe knows of an other more specific reason I'd be interested to know.
My theory is it's because Adobe's dev teams test the softwares on (up to) these builds and therefore cannot guarentee compatibility with earlier versions but if someone from Adobe knows of an other more specific reason I'd be interested to know.