I read about this a while ago and quickly went to the website and this is the message that greets one now when pressing "home":
Warhammer Historical Has Now Closed
We can no longer accept any further orders for our products
We would like to thank our customers who have purchased our publications over the years and hope you will continue to get many more years of gaming enjoyment from them
If you have any queries regarding orders that have been placed with Warhammer Historical please
contact the Forge World Customer Service team.
I'm sorry to see something like this close down as they did produce some interesting books. The rumor that they closed down arised already last year with the 50% sale that went on for some time and now it has proven true. I find it interesting that they close down so soon after releasing their WWI airplane game but that decision was probably made long ago. In conclusion I think it's a shame that Warhammer Historical is no more but I am glad I actually managed to get a decent amount of rules during their discount period last year.