I haven't got the technical details yet, but last week we had a major step forward when some of the people who work on complex scripts for the Non-Roman Script Initiative met with Mark Shuttleworth, the man behind Ubuntu. The next release of Ubuntu in April will incorporate some of their work. The reason I'm interested in this is that support for complex scripts enables Bible Translation to take place in minority languages. The reason we're interested in Linux is the low cost for people for whom the economy of their country prevents them getting legal copies of Windows.
The official press release is on our website.