VCP-IAAS still covers 1.5. This is not mentioned explicitly in the Blueprint except where it notes that vCloud Director 1.5 can be downloaded and evaluated for free.
The VCP-Cloud exam covers 5.1
Welcome to the Community - As with any of teh VCP exams follow the Blueprint and the links it provides - this will be the indication as to what version/release -
VCP-IAAS still covers 1.5. This is not mentioned explicitly in the Blueprint except where it notes that vCloud Director 1.5 can be downloaded and evaluated for free.
The VCP-Cloud exam covers 5.1