Laid off in Middle of Interview Process-Telling Potential Employers?

So I just got laid off at my current position, basically a newer executive is trying to completely restructure/replace the department with his own people and it came as a complete shock to me/my managers/coworkers. The thing is, things had been souring there for awhile so I started the job search process a couple weeks ago and have had some phone interviews since. If I am optimistic about potentially getting an offer from one company, should I be upfront about the layoff during our next call/meeting? It had nothing to do with my performance and I have several references to confirm the situation, and the layoff was indicative of why I wanted to leave in the first place. Thoughts?

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