In theory, they should be equal to rdb100* feature-wise. Some requirements:
- 72 GB of memory
- Cpus do not really matter
- For the rest see https://racktables.wikimedia.org/index.php?page=object&tab=default&object_id=1788
Systems have been ordered via https://rt.wikimedia.org/Ticket/Display.html?id=9172, and as of 2014-02-26 have an ETA of 2015-03-09.