Dll version 4.1.5

I just saw the new documentation link which is for .dll 4.1.5.0. Is that a typo, since the beta to be released is 4.1.4.0, or will 4.1.5.0 be released shortly? Where can I find the change notes for differences between 4.1.4.0 and 4.1.5.0?

Yes it will be released Monday but where do you see the 4.1.5.0? I am not seeing at anywhere!

Sorry, should have been more specific:
on the homepage: http://www.tinyclr.com/dl/ I clicked on the documentation
“(NEW) GHI Electronics NETMF Documentation Mar. 11, 2011”

From there I went to NETMF->PersistentStorge to look up something. I landed here:
http://www.ghielectronics.com/downloads/NETMF/Library%20Documentation/Index.html

At the top of the page was this version info:
Assembly: GHIElectronics.NETMF.IO (in GHIElectronics.NETMF.IO.dll) Version: 4.1.5.0 (4.1.5.0)

Other entries have the same Assembly version 4.1.5

Oh I see the documentation for the new SDK is already online…the SDK will be next