The current version of stacks (4.1.x) will work with RW7, however the next version 4.2 will drop RW7 support.
Stacks v4.2 will drop RapidWeaver 7 support.
The current version of stacks (4.1.x) will work with RW7, however the next version 4.2 will drop RW7 support.
Stacks v4.2 will drop RapidWeaver 7 support.