According to this 11pm news broadcast from Russian state television Roossiya-1 a ceasefire has been announced with immediate effect. This came after reports that the Kiev junta were using short-range ballistic missiles against the rebels in the area where the OCSE teams are waiting to get into the MH17crash site and that this was a huge escalation in the conflict.
No doubt there will be more coming out on this in the coming hours.
Short-range ballistic missile used by Kiev
Kerry demands ceasefire with immediate effect
Вашингтон требует от киевских марионеток прекращения огня 29 07 2014
Here is the report from Russian TV (sorry, no translation)
And the CNN report - it seems that it was they that broke this story
And 'no comment' from Jan Psaki
In the meantime the EU has announced more sanctions -
Obama Joins EU in Sanctioning Russia as Ukraine’s Civilian Death Toll Mounts