Oh poor you. The exact same thing happend to us a couple of months back. We were given 4 weeks' notice once an offer was made and it was really stressful, trying to find somewhere else.
Turned out good though, new yard is 100 times better. fingers crossed.
Oh Bu**er that's not good news.I hope you find somewhere soon.But it does give you chance to have a nosey round other peoples yards.I like being nosey!.
The exact same thing happened to me about a year ago. All the liveries left bar me and one other. When the place was finally sold the new owners kept it as a livery yard and have also sunk a lot of money into improving the place too so don't despair.
Its worth scouting around to see whats available and even get your name on a waiting list somewhere else but until you know for certain what will happen try not to worry too much.
Hope it all turns out ok for you,
AJ