The binary version for MySQL Cluster 7.1.9 has now been made available at http://www.mysql.com/downloads/cluster/
A description of all of the changes (fixes) that have gone into MySQL Cluster 7.1.9 (compared to 7.1.8) can be found in the official MySQL Cluster documentation. In addition, there is a great BLOG posting from Johan Anderson explaining how to use the new table added to ndbinfo to tune DiskPageBufferMemory when storing tables on disk.