I'd tone it down a little via: “I'm planning on migrating the build system on Wednesday (26th); please let me know if you have any concerns.” The original wor

I'd tone it down a little via: “I'm planning on migrating the build system on Wednesday (26th); please let me know if you have any concerns.” The original wording makes it sound like it's already been settled, so nobody will bother responding. But by saying planning, you might get some feedback.