Windows Phone 7 Mango developer build to be updated tomorrow?

The Windows Phone Dev Podcast team were the first to inform us that Mango has gone RTM, even when Microsoft denied it.  Now they have tweeted that developers will have 7712 reasons to look forward to tomorrow, suggested we will see built 7712 of Windows Phone 7 Mango being pushed out to devs.

The RTM of Mango is however supposed to be 7720, suggesting that that build will not in fact be the final build, but it may be so close as not to matter.