Okay, I can stop the panic process for now. My whole department is being retained for 12 months. We'll get the retention package via mail probably next week, but in the meantime, at least I won't be out of a job come this Friday. What a relief.
I have no clue as to what the retention package with contain, but if I stick it out until the end of the 12 months, I'll at least get severance at that point. And, since I'll know ahead of time when it's coming, I can start the job hunt in advance.
Anyway, I'm no longer feeling nauseated and anxious. However, I do know that it will be different, with other co-workers and support staff from other areas of the company being phased out before the end of my employment. It will be a challenge, no doubt.
Thank you all for your kind words of support!