I noticed it too. The schedule on the website is:
7pm: JKJ
7.30pm: Beyhadh
8pm: KRPKB
8.30pm: Crime Patrol
9.30pm: Yeh Moh Moh Ke Dhage
10pm: Peshwa Bajrao
10.30pm: Hanumaan
It may be a good marketing move as most of the shows on the rivals channels during that time slot aren't doing that well as compared to the old time slot. Also, I've a feeling that they may be clearing the 8.30pm-9.30pm slot for new shows and Crime patrol is just a replacement. All in all, increase in TRPs for KPRKB?