Nick Parker from Microsoft held a Microsoft OEM press conference at IFA 2015 today where he very briefly displayed an as of yet unannounced Windows 10 2-in-1 tablet from Toshiba.
(UPDATED: The 12-inch Toshiba Dynapad was unveiled on October 13, 2015)
This is a 12-inch Windows 10 2-in-1 tablet with a digitizer clipped onto it, much like the current Windows 10 tablet Toshiba Encore 2 Write.
According to Verge, the 12-inch Toshiba tablet is light, made of plastic, and sports an Intel Atom processor as well as a Full HD resolution of 1920 x 1280.
It has been photographed with a Lenovo Miix 2 10-style keyboard dock so it’s too early to tell if this will be a Toshiba Encore 3 Write, or if it will get some other family name.
Nothing new from the Microsoft keynote. Just the Toshiba concept tablet, which looks real nice http://t.co/6hmGNySIIe pic.twitter.com/uAkpahFeZg
— Tom Warren (@tomwarren) September 4, 2015

Nick Parker at IFA today
– Jim Miller