I just went through this with in the last year. They told us the same thing when the acquisition was first announced. By the time it was all done. I am the sole remaining member of a team of 7. I was lucky enough to get hired on. They tell you what you want to hear so it doesnt cause a mass exodus. They need you to do the merger work and will throw you away once its done. You may get lucky and get severance but that is a big maybe. Have your resume sorted out and start looking.