Still no drum score yet?

I assumed the drum score would have been sorted in 1.1
Still only on one line for the notes?

IFAIK it was never promised for 1.1. There has been talk of it debuting in the following (major) update though

Unpitched percussion notation and cues are the main focus of our work on the next major update to Dorico. We cannot tackle every major functional area at all once, despite the incredible capability of the team, as demonstrated by this most recent update.