Sony Japan announced the Xperia Z2 (SO-03F) and Xperia Z2 Tablet (SO-05F) for NTT DoCoMo earlier today, along with the Xperia A2 (SO-04F). From what we can tell, the Xperia Z2 (SO-03F) is the same as the global version but comes with 32GB of internal storage as standard (global model has 16GB). There is also support for Full-Seg, although this is via an adaptor rather than being built into the handset. The Xperia Z2 (SO-03F) has no infra-red support.
The Xperia Z2 Tablet (SO-05F) is an LTE model with 32GB of internal storage. DoCoMo plans to launch the Xperia Z2 on 21 May 2014, with black , purple and white colours available. The Xperia Z2 Tablet is scheduled for launch at the end of June 2014 in black and white colours.