Got dev preview 4 instead of dev preview 5, why haven't I been updated with dev preview 5?

[AC Question]

Got dev preview 4 instead of dev preview 5

Hello everyone.I am from India.Yesterday(20 july) i have enrolled for android beta program.i got an OTA update.I installed it but i got dev preview 4 installed(NPD56N).As we already know google has release dev preview 5.I want to knw why i haven't been updated with dev preview 5.
Thank you.