Update October 19: one of the parts that were found was shown during the DSB presentation of the final report at October 13.
In the Russia Today documentary ‘MH17 A year without truth‘ some previously unknown parts of MH17 were seen. These parts are part of the cockpit roof and were found near Petropavlivka. The parts are probably found in June 2015. The wreckage were delivered to the mayor of Petropavlivka Natalya Voloshina
In a thread on mh17.webtalk.ru some photos of the rooftop appeared as well.
The photo below shows a screenshot from the Russia Today documentary.
Russia Today at August 3 reports that the Dutch Safety Board contacted RT to recover the parts found. Spokeswoman Sara Vernooij of the DSB responded that they do not tell who is contacted and what the results are.
The recording of the news item on TV is here.
The photo left shows the part as shown in the RT docu. The photo right shows the same part(photo turned 90 degrees) as shown to the press at October 13 at Gilze Rijen)
The left photo shows another part of the rooftop. The middle photo shows the rooftop part as shown in the RT docu
The photo below shows both parts fit very well together.
Some other parts of the rooftop were found.