WEll apparently there is conflicting information.
As you can see the first information is from the U of I--which is higly respected around Illinois.
http://urbanext.illinois.edu/raspberries/planting.cfmhttp://www.raspberries.us/_______________________________________________________________
I have a book, pamplet really on Rasberries & blackberries.
It says the following:
To never plant your raspberries in soil that is too acid.--a ph that is 6.0 is preferable.
To set the plants out in the
spring about the time that beans are planted in your section of the country.
If ordering from a nursery in early Jan or feb the nursery will send them out at the proper time.
Unless you live in the south or southwest one should plant in the
spring.
It says IF the winters are not too severe one could plant in the fall.
(with Illinois we could have a mild winter or we could have a severe winters).
personally when I used to grow Blackberries, as long as it was wet & not really hot, I would start new plants.
You could always try a few this fall & plan on planting some more in the
spring when it is wet yet ...