something is in the wind
From Longman Dictionary of Contemporary Englishsomething is in the windsomething is in the windSOONused to say that something is happening or going to happen, but the details are not clear If there was a merger in the wind, I’m sure we’d hear about it. → windExamples from the Corpussomething is in the wind• If there was talk of a merger in the wind, I'm sure we'd hear about it.