When's the next Linq CTP due?

I was just a-wonderin when we might expect the next CTP for Linq? Sometime before the first Orcas beta?

Also, is it safe to install the May CTP of Linq on Vista build 5728 alongside this Friday's drop of the Windows SDK and Orcas extensions (i.e. the drop that accompanies the 5728 OS build).

[309 byte] By [TomKirby-Green] at [2007-12-24]