We are not planning to remove the deprecated features and functionality from the product. There's a document that includes information about this, but there is a typo and we are in the process of correcting it.
We are planning to wrap the deprecated features with a compiler (and/or a startup) parameter to provide a warning to the users when using these features. However, again, there is no plan to remove the functionality from the product.
The objective of the deprecation is to set the expectation that those features are considered obsolete and therefore customers should start planning accordingly, having plenty of time (multiple releases, 10.0, 10.1, 10.2, etc.) to proceed.
Finally, the deprecation is exclusive to OpenEdge 10, no change is being done to V9, that would compromise existing deployments.