What are devhot programs?
It depends very much on the development stage you catch them.

It is better to say that devhot programs are built with the most up-to-date committed source code and it is updated very frequently.

The consequences are very updated programs but may be out-of-quality standards.

For developers: Its quality will depend very much of the "temperature", the level of chaos in the basis branch, according to terminology of ca2 development process.