You are always able to export to mobile with Unity Free (now Personal) but now the Pro Mobile features such as Static/Dynamic Batching, Code Stripping which is now included in the Personal version.
The only main difference is that you are paying $1500 to remove or have custom splash screen when you deploy to mobiles.
The only main difference is that you are paying $1500 to remove or have custom splash screen when you deploy to mobiles.