May as well kick up your heels and wait until December 2008. Until then, we can't expect Paramount / Dreamworks to go neutral - let alone BD exclusive.
Thankfully WB is still neutral as this could woo Paramount back. That would leave Universal looking like the last stick in the mud and follow suit. While, other issues are sure to follow with this kind of trend, it becomes a "soft win" for BD because all the major studios do blu-ray - even though 3 are still neutral. The "hard win" only comes when they drop HD DVD completely. 2009 will be a very interesting year indeed.