Nothing new. Some participate and others do not. If getting a doscount is important then Schwab holders need to contact Schwab NOW at tell them to include or close their account. Other simply do not and will not participate. I closed my Schwab account over this exact issue. The $$ difference is not huge, but it is the principle.
Schwab does participate, I have been in the etp sponsored drip for almost a year now. You do have to ask for it, and be sure to differentiate it from the regular schwab drip. Seems that not all of the schwab telephone people know about their own program to enroll in a number of company sponsored drips.