Just had an email from the Origins Network saying they now have a National Wills Index "which will become the primary online resource for pre-1858 English probate material."
But looking at the databases which are included, as far as I can see it is just a new name they've come up with for the indexes they already had and there is nothing new. Mostly just the PCC and York wills, not the ones that were proved in lower level courts. Or am I missing something?
http://www.originsnetwork.com/NWIWelcome.aspx
Still, it does sound as though they're planning to add more, so worth keeping an eye open.