David Davis is being made “minister for brexit” (imagine having to put that on your CV), and Boris is being made foreign secretary.
This implies either:
1. Theresa May is really serious about brexit by giving big brexiters top foreign policy jobs
2. Theresa May isn’t at all serious about brexit and is being quick to give brexiters enough rope to hang themselves so she can back out of it
Boris as foreign secretary is a strange choice, as she specifically rubbished his ability to negotiate with foreign powers during her leadership campaign launch speech.