YADM - (Yet another database machine), this time it is an OLTP machine to be announced on Tuesday - Sep 15. See the details here "Announcing the World’s First OLTP Database Machine with Sun FlashFire Technology "
The HO Oracle Database Machine and Exadata storage announced in the Oracle Openworld 2008, was mainly targeted to the high end data warehousing. Some of the pioneers to use this were Giant Eagle, LGR Telecomm etc. It was based on HP hardware. This new offering targeted at OLTP databases, is based on Sun hardware.