Thanks Ursula. I'm gald its not just me being precious.

No, there has been no consulation with parents, or official notification.
DS's carer told DH about it last night, and gave the impression that she is less than impressed, and asked us to forward complaints.

i just spoke to DH, and he said another parent was not happy about it when they were told this morning, so I about to call and get the full story before I shoot off a letter of complaint.

This is what I have so far, but after reading your post I would like to include some of your points, that is if you don't mind?

I am writing to express my deepest dismay at the recent decision made in regards to the ongoing rotation of teachers between rooms at XXXXXX
The annual rotation of teachers/staff was one of the main reasons that we chose XXXXXX when we looked at childcare options for our son, and this is about to be abolished.
I think this will seriously undermine the child/carer relationship by removing the sense of stability that is presently in place. As it is my son (and I am sure he is not alone) is more unsettled on days where regular staff in his room have an RDO, or training, or are on leave. I really do not see the reason to do this to the children on an regular, ongoing basis.
Child/carer relationships are not something that can be built overnight, or in a week. Its an ongoing process, and I think its sad that the children at are not going to have the opportunity to build these relationships. My son is comfortable with, and has built up a trust relationship with his carers. I also believe that some of the younger children are not old capable of understanging or coping with this constant change and will potentially be left upset and confused.
I am also disappointed that parents’ opinion was not sought during decision making process, for something that is a fundamental change to the way the centre will be run.
I will now need to seriously consider keeping my son at the centre if this policy remains in place.